Wachs EP 424 User Manual
E.H. Wachs
600 Knightsbridge Parkway
Lincolnshire, IL 60069
www.ehwachs.com
EP 424 End Prep Machine
User’s Manual
E.H. Wachs Part No. 81-MAN-00
Rev. 0-0610, June 2010
Revision History:
Original June 2010
Copyright © 2010 E.H. Wachs. All rights reserved.
This manual may not be reproduced in whole or in part
without the written consent of E.H. Wachs.
EP 424 End Prep Machine
Part No. 81-MAN-00, Rev. 0-0610 E.H. Wachs
Table of Contents
Table of Contents
Chapter 1: About This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Purpose of This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
How to Use The Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Symbols and Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Manual Updates and Revision Tracking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Chapter 2: Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Operator Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Safety Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Protective Equipment Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Safety Labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Chapter 3: Introduction to the Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Overview of the EP 424 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Form-Tool Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Single-Point Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
EP 424 Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Drive Motors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Capacities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Dimensions and Weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Operating Envelope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Chapter 4: Assembly, Disassembly, and Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Storage Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Chapter 5: Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Mounting the Mandrel on the Pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Mounting the Universal (Standard) Mandrel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Mounting the Independent Chuck Mandrel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Using the Drive Motors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Mounting and Operating the Air Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Mounting and Operating the Hydraulic Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Form Tool Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Planning the Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Operating Envelope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Selecting Tooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Adjusting the Tool Holder Positions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Setting Up and Mounting the EP 424 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
E.H. Wachs Part No. 81-MAN-00, Rev. 0-0610 1
EP 424 End Prep Machine
Assembling the Machine Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Removing the Machine from the Workpiece . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Single Point Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Installing the Single-Point Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Planning the Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Operating Envelope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Selecting Tool Holder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Beveling O.D. Set-Back . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Setting Up and Mounting the EP 424 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Assembling the Machine Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Using the Speed Prep Autofeed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Compound Bevel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Removing the Machine from the Workpiece . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Removing the Single-Point Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Chapter 6: Routine Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Main Drive Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Felt Wipers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Single-Point Slide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Mandrel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Drive Motor Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Chapter 7: Service and Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Adjusting the Single-Point Slide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Tighten the Starwheel Stop Collar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Adding/Removing Gib Shims . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Adjust the Push Plate Set Screws . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Calibrating the Speed Prep Scale . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
Air Motor Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Chapter 8: Parts Lists and Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Chapter 9: Accessories and Spare Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Tooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Chapter 10: Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Ordering Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Repair Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Warranty Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Return Goods Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
2 P art No. 81-MAN-00, Re v. 0-0610 E.H. Wachs
Chapter 1
About This Manual
PURPOSE OF THIS MANUAL
This manual explains how to operate and maintain the
EP 424 end prep machine. It includes instructions for setup, operation, and maintenance. It also contains parts lists,
diagrams, and service information to help you order
replacement parts and perform user-serviceable repairs.
Chapter 1, About This Manual
In This Chapter
PURPOSE OF THIS MANUAL
HOW TO USE THE MANUAL
SYMBOLS AND WARNINGS
MANUAL UPDATES AND
EVISION TRACKING
R
Before operating the EP 424, you should read through this
manual and become familiar with all instructions. At a minimum, make sure you read and understand the following
chapters:
• Chapter 1, About This Manual
• Chapter 2, Safety
• Chapter 3, Introduction to the Equipment
• Chapter 5, Operating Instructions
• Chapter 9, Accessories
If you will be performing service or repairs, make sure you
read and understand these chapters:
• Chapter 1, About This Manual
• Chapter 4, Assembly and Disassembly
• Chapter 6, Routine Maintenance
• Chapter 7, Service and Repair.
You will also want to refer to Chapter 8, Parts Lists and
Drawings.
E.H. Wachs Part No. 81-MAN-00, Rev. 0-0610 1
EP 424 End Prep Machine
WARNING
This is the safety alert symbol. It is used
to alert you to potential personal injury
hazards. Obey all safety messages that
follow this symbol to avoid possible
injury or death.
CAUTION
HOW TO USE THE MANUAL
Throughout this manual, refer
to this column for warnings,
cautions, and notices with
supplementary information.
This manual is organized to help you quickly find the information you need. Each chapter describes a specific topic on
using or maintaining your equipment.
Each page is designed with two columns. This large column
on the inside of the page contains instructions and illustrations. Use these instructions to operate and maintain the
equipment.
The narrower column on the outside contains additional
information such as warnings, special notes, and definitions.
Refer to it for safety notes and other information.
SYMBOLS AND WARNINGS
The following symbols are used throughout this manual to
indicate special notes and warnings. They appear in the outside column of the page, next to the section they refer to.
Make sure you understand what each symbol means, and
follow all instructions for cautions and warnings.
A WARNING alert with the
safety alert symbol indicates
a potentially hazardous situation that could result in seri-
ous injury or death.
A CAUTION alert with the
safety alert symbol indicates
a potentially hazardous situation that could result in
minor or moderate injury.
2 Part No. 81-MAN-00, Rev. 0-0610 E.H. Wachs
Chapter 1, About This Manual: Manual Updates and Revision Tracking
CAUTION
This is the equipment damage alert
symbol. It is used to alert you to potential equipment damage situations.
Obey all messages that follow this symbol to avoid damaging the equipment or
workpiece on which it is operating.
IMPORTANT
NOTE
NOTE
This symbol indicates a user note. Notes
provide additional information to supplement the instructions, or tips for easier
operation.
A CAUTION alert with the
damage alert symbol indicates a situation that will
result in damage to the
equipment.
An IMPORTANT alert with
the damage alert symbol indicates a situation that may
result in damage to the
equipment.
MANUAL UPDATES AND REVISION TRACKING
Occasionally, we will update manuals with improved operation or maintenance procedures, or with corrections if necessary. When a manual is revised, we will update the
revision history on the title page.
You may have factory service or upgrades performed on the
equipment. If this service changes any technical data or
operation and maintenance procedures, we will include a
revised manual when we return the equipment to you.
A NOTE provides supplementary information or operating tips.
Current versions of E.H.
Wachs Company manuals
are also available in PDF format. You can request an
electronic copy of this manual
by emailing customer service
at sales@wachsco.com
.
E.H. Wachs Part No. 81-MAN-00, Rev. 0-0610 3
EP 424 End Prep Machine
4 Part No. 81-MAN-00, Rev. 0-0610 E.H. Wachs
Chapter 2
Safety
E.H. Wachs takes great pride in designing and manufacturing safe, high-quality products. We make user safety a top
priority in the design of all our products.
Chapter 2, Safety
In This Chapter
OPERATOR SAFETY
SAFETY LABELS
Read this chapter carefully before operating the EP 424 end
prep machine. It contains important safety instructions and
recommendations.
OPERATOR SAFETY
Follow these guidelines for safe operation of the equipment.
• READ THE OPERATING MANUAL. Make sure
you understand all setup and operating instructions
before you begin.
• INSPECT MACHINE AND ACCESSORIES.
Before starting the machine, look for loose bolts or
nuts, leaking lubricant, rusted components, and any
other physical conditions that may affect operation.
Properly maintaining the machine can greatly decrease
the chances for injury.
• ALWAYS READ PLACARDS AND LABELS. Make
sure all placards, labels, and stickers are clearly legible
and in good condition. You can purchase replacement
labels from E.H. Wachs Company.
• KEEP CLEAR OF MOVING PARTS.
arms, and fingers clear of all rotating or moving parts.
Keep hands,
Look for this symbol throughout the
manual. It indicates
a personal injury
hazard.
E.H. Wachs Part No. 81-MAN-00, Rev. 0-0610 5
EP 424 End Prep Machine
Always turn machine off before doing any adjustments
or service.
• SECURE LOOSE CLOTHING AND JEWELRY.
Secure or remove loose-fitting clothing and jewelry , and
securely bind long hair, to prevent them from getting
caught in moving parts of the machine.
• KEEP WORK AREA CLEAR. Keep all clutter and
nonessential materials out of the work area. Only people
directly involved with the work being performed should
have access to the area.
Safety Symbols
This icon is displayed with any safety alert that indicates a
personal injury hazard.
WARNING
This safety alert indicates a potentially hazardous situation
that, if not avoided, could result in death or serious injury.
CAUTION
This safety alert, with the personal injury hazard symbol,
indicates a potentially hazardous situation that, if not
avoided, could result in minor or moderate injury.
6 Part No. 81-MAN-00, Rev. 0-0610 E.H. Wachs
Protective Equipment Requirements
Always wear impact resistant eye protection while operating or working near
this equipment.
WARNING
CAUTION
Personal hearing protection is recommended when operating or working near
this tool.
For additional information on eye and face protection, refer
to Federal OSHA regulations, 29 Code of Federal Regulations, Section 1910.133., Eye and Face Protection and
American National Standards Institute, ANSI Z87.1, Occupational and Educational Eye and Face Protection. Z87.1 is
available from the American National Standards Institute,
Inc., 1430 Broadway, New York, NY 10018.
Chapter 2, Safety: Safety Labels
Hearing protectors are required in high noise areas, 85 dBA
or greater . The operation of other tools and equipment in the
area, reflective surfaces, process noises, and resonant structures can increase the noise level in the area. For additional
information on hearing protection, refer to Federal OSHA
regulations, 29 Code of Federal Regulations, Section
1910.95, Occupational Noise Exposure and ANSI S12.6
Hearing Protectors.
SAFETY LABELS
The following safety labels are on the EP 424 machine. If a
label is lost or unreadable, order and attach a replacement.
See ordering instructions in Chapter 10.
E.H. Wachs Part No. 81-MAN-00, Rev. 0-0610 7
EP 424 End Prep Machine
Figure 2-1. Crush hazard safety label (part no. 81165-00).
Figure 2-2. Crush and cut hazard safety label (part
no. 90-401-04).
Figure 2-3. Loud noise hazard safety label, provided
with air drive configurations (part no. 90-401-03).
Figure 2-4. Eye injury hazard label, provided with
hydraulic drive configurations (part no. 90-401-01).
8 Part No. 81-MAN-00, Rev. 0-0610 E.H. Wachs
Figure 2-5. Compressed air pressure safety label
(part no. 90-401-02).
Chapter 2, Safety: Safety Labels
Figure 2-6. Hydraulic pressure safety label (part no.
90-402-01).
E.H. Wachs Part No. 81-MAN-00, Rev. 0-0610 9
EP 424 End Prep Machine
10 Part No. 81-MAN-00, Rev. 0-0610 E.H. Wachs
Chapter 3
Introduction to the
Equipment
OVERVIEW OF THE EP 424
Chapter 3, Introduction to the Equipment
In This Chapter
OVERVIEW OF THE EP 424
S
PECIFICATIONS
The EP 424 is an I.D. (inside diameter) mounted end prep
machine for facing, beveling, counterboring, and J-prepping pipes and flanges. It can be used for pipes from 4-24
inches O.D., with wall thicknesses up to 1.6” (41 mm)
using form tools, or 6.5” (165 mm) with single-point operation.
The EP 424 is provided in 4 configurations:
• Form tool machine with air drive, part no. 81-000-01
• Form tool machine with hydraulic drive, part no. 81000-02
• Single-point machine with air drive, part no. 81-000-03
• Single-point machine with hydraulic drive, part no. 81000-04.
Form tool operation is quick to set up and easy to perform
on pipe walls up to schedule 160 (1.6” on 16” pipe). For
heavier wall pipe up to 6.5” wall thickness, the single-point
kit allows you to perform any bevel profile.
OPERATING ENVELOPE
Form-Tool Configuration
The form tool configurations have a rotating tool head with
3 tool holders, for performing up to 3 simultaneous opera-
E.H. Wachs Part No. 81-MAN-00, Rev. 0-0610 11
EP 424 End Prep Machine
tions. Tooling is available for facing, single-angle beveling,
compound beveling, counterboring,
The form tool configuration will perform end prepping (facing, beveling, J-prepping, and counterboring), with the
operator manually feeding the tool head.
Figure 3-1. The photo shows the form tool configuration of the machine with the standard self-centering
mandrel.
Single-Point Configuration
The single-point machine is provided with a tool slide that
feeds the tool radially across the face of the pipe or flange.
The slide is driven by a starwheel that engages trips on a
ring mounted to the machine housing. Bevels are performed
using the Speed Prep auto-feed system, which automatically
feeds the machine axially as it cuts.
The single-point machine will perform facing or beveling of
thick-walled pipes and flanges.
12 Part No. 81-MAN-00, Rev. 0-0610 E.H. Wachs
Chapter 3, Introduction to the Equipment: Overview of the EP 424
Figure 3-2. The photo shows the single-point configuration of the EP 424.
EP 424 Components
The following components are provided with the form tool
configuration of the EP 424:
• main drive assembly with lifting attachments
• feed assembly
• rotating tool head
• standard self-centering mandrel
• drive motor (air or hydraulic)
• hand tool set
The single-point configuration includes the following additional components:
E.H. Wachs Part No. 81-MAN-00, Rev. 0-0610 13
EP 424 End Prep Machine
StarwheelFeed screws
Male tool slide
Tool holder
Feed gauge
• single-point slide
Figure 3-3. The single-point slide feeds the tool radially across the pipe face. It is driven along a feed
screw by a starwheel.
• radial feed trip assembly
Figure 3-4. The photo shows the trip assembly
mounted on the main drive housing.
14 Part No. 81-MAN-00, Rev. 0-0610 E.H. Wachs
• Speed Prep autofeed module
WARNING
Speed Prep
module
Chapter 3, Introduction to the Equipment: Overview of the EP 424
The Speed Prep autofeed
can feed the machine until it
comes off the mandrel.
Crushing or other serious
injuries could occur. Use the
autofeed stop plate (81-316-
00) to keep the machine from
feeding too far.
Figure 3-5. The speed prep module is installed on the
main drive to operate the feed mechanism for singlepoint beveling.
• independent chuck mandrel
Figure 3-6. The independent chuck mandrel allows
you to center the machine on the O.D. of the pipe.
E.H. Wachs Part No. 81-MAN-00, Rev. 0-0610 15
EP 424 End Prep Machine
• extension leg kit for standard mandrel
Figure 3-7. Two sets of extension legs allow the standard mandrel to be mounted in pipes up to 23.64” I.D.
• dial indicator assembly
16 Part No. 81-MAN-00, Rev. 0-0610 E.H. Wachs
Figure 3-8. The dial indicator is provided for centering the independent chuck in the pipe.
Chapter 3, Introduction to the Equipment: Overview of the EP 424
Drive Motors
Two drive motors are available for the EP 424:
• a 3.5 HP air motor, part no. 81-311-00. The air motor
requires 95 cfm air flow at 90 psi (2,700 l/min at 6.2
bar).
Figure 3-9. The photo shows the EP 424 air motor.
• a hydraulic motor, part no. 81-310-00. The hydraulic
motor requires 10 gpm flow at 1500 psi (38 l/min @103
bar).
Figure 3-10. The hydraulic motor is interchangeable
with the air motor.
E.H. Wachs Part No. 81-MAN-00, Rev. 0-0610 17
EP 424 End Prep Machine
Both motors include adapters for the EP 424. The motors
are interchangeable, requiring no modifications to the EP
424 machine.
Accessories
The following accessories are available for the EP 424:
• Single-point upgrade kit, part no. 81-400-00 (for formtool machine configuration); includes Speed Prep module, single-point slide, trip ring, and independent chuck.
• Extension leg kit for standard mandrel, part no. 81-303-
01. Extends maximum clamping I.D. to 23.64” (600.5
mm).
• Independent chuck mandrel, part no. 81-305-00. (Provided with single-point machine or kit; available as
option for form tool machine.)
• Short perch mandrel, part no. 81-315-00. Self-centering
mandrel for pipes with bends or limited I.D. access.
• Air treatment module, part no. 26-407-00.
18 Part No. 81-MAN-00, Rev. 0-0610 E.H. Wachs
SPECIFICATIONS
Capacities
Table 1: EP 424 Operating Capacities
Chapter 3, Introduction to the Equipment: Specifications
Air requirements
Hydraulic requirements
Axial feed 0.071” per feed handle revolution
Single-point slide radial feed
Max feed travel 3.50” (88.9 mm)
Max. rotating speed (no
load)
Min. pipe wall thickness Schedule 40
Max. pipe wall thickness
(form tool)
Max pipe wall thickness (sin-
gle-point)
Lift hook capacity 1000 lb (454 kg)
95 cfm at 90 psi
(2690 l/min at 6.2 bar)
Min 10 gpm/max 15 gpm at 2000 psi
(38/57 l/min at 138 bar)
0.0052” (0.132 mm) per engaged trip;
6.5” (165 mm) maximum feed
20 rpm
1.6” (40.5 mm), depending on material
6.5” (165 mm)
Dimensions and Weights
The envelope drawings in the following section include the
dimensions for each machine configuration, and the weight
for each subassembly. Table 2 below includes overall
dimensions and weights for each configuration.
Table 2: Overall Dimensions and Weights
Configuration
81-000-01
(Form tool/air
drive)
81-000-02
(Form tool/
hydraulic drive)
Dimensions
(L x W x H)
28.8” x 36.2” x 16.1”
(732 x 919 x 408 mm)
28.8” x 25.3” x 16.1”
(732 x 643 x 408 mm)
154.5 lb (70.2 kg)/
172 lb (78.2 kg)
162 lb (73.6 kg)/
179.5 lb/81.6 kg
E.H. Wachs Part No. 81-MAN-00, Rev. 0-0610 19
Weight
(Std. Mandrel/
Ind. Chuck Mandrel)
EP 424 End Prep Machine
Table 2: Overall Dimensions and Weights
Weight
(Std. Mandrel/
Ind. Chuck Mandrel)
Configuration
81-000-03
(Single-point/air
drive)
81-000-04
(Single-point/
hydraulic drive)
Shipping/
storage case
Dimensions
(L x W x H)
25.5” x 42.3” x 21.2”
(648 x 1075 x 539 mm)
25.4” x 30.4” x 21.2”
(645 x 772 x 539 mm)
37” x 36.3” x 22.3”
(940 x 922 x 566 mm)
176 lb (80 kg)/
193.5 lb (88 kg)
183.5 lb (83.4 kg)/
201 lb (91.4 kg)
OPERATING ENVELOPE
The drawings on the following pages illustrate the operating
envelope for all configurations of the EP 424:
• Standard machine with air drive (81-000-01)
• Standard machine with hydraulic drive (81-000-02)
• Single-point machine with air drive (81-000-03)
• Single-point machine with hydraulic drive (81-000-04).
There are also dimensional drawings for the following components:
• Standard mandrel with extension legs
• Form tool rotating head
• Independent chuck mandrel with extension legs
• Single-point slide.
20 Part No. 81-MAN-00, Rev. 0-0610 E.H. Wachs
29.31
744.6
AXIAL FEED: .071"[1.80] PER FEED
HANDLE REVOLUTION
(CLOCKWISE)
28.81
731.6
10.47
265.9
1.02
25.9
3.59
91.1
7.5
.29
(SHOWN WITH
ON MANDREL)
.50 [12.7] TREAD ENGAGEMENT
5.38
136.5
208
8.19
&
56-198-02
56-711-01
INSERT HOLDER
3.50
88.9
TOOL
FACING/BEVELING
Operating Envelope
EP 424 Air Drive Conguration
81-000-01
MAX TRAVEL
15.73
13.68
399.5
347.5
20 RPM
MAX FREE SPEED
5.38
136.5
AIR REQUIREMENTS
AIR CONSUMPTION 95 cfm [2690 l/min]
PRESSURE 90 PSI [6.2 BAR]
MAX
MAX
4.20
1/2 NPT
106.6
LEGS SHOWN FULLY EXTENDED
2.72
69.2
MIN
MIN
3.25
82.6
LEGS SHOWN FULLY RETRACTED
NOTE:
SEE 81-303-00 FOR ALL
EXTENSION RANGES
17.41
442.3
.29
7.5
(SHOWN WITH
ON MANDREL)
7.66
AXIAL FEED: .071"[1.80] PER FEED
HANDLE REVOLUTION
(CLOCKWISE)
194.5
28.81
731.6
10.47
265.9
1.52
3.09
38.6
78.4
5.38
.50"[12.7] THREAD ENGAGEMENT
136.5
208
8.19
&
56-711-01
56-198-02
INSERT HOLDER
FACING/BEVELING
TOOL
3.50
88.9
Operating Envelope
MAX TRAVEL
EP 424 Hydraulic Drive Conguration
81-000-02
15.73
13.68
399.5
347.5
20 RPM
MAX FREE SPEED
MAX FLOW 15 GPM [57 LPM]
MAX PRESSURE 2000 PSI [138 BAR]
5.38
136.5
MAX
4.20
MAX
106.7
LEGS SHOWN FULLY EXTENDED
2.72
69.2
MIN
MIN
3.25
82.6
LEGS SHOWN FULLY RETRACTED
NOTE:
SEE 81-303-00 FOR ALL
EXTENSION RANGES
29.31
744.6
.50
12.7
ON MANDREL
THREAD ENGAMENT
8.19
208
25.35
643.8
27.15
689.7
ROTATING
20 RPM
MAX FREE SPEED
AXIAL FEED: .071" [1.80] PER FEED
HANDLE REVOLUTION
(CLOCKWISE)
13.00
330.2
FEED RATE: .0052" [.132]
PER TRIP ENGAGED
TOTAL STROKE: 6.5" [165.1]
3.50
88.9
MAX TRAVEL
&
HOLDER
56-205-01
52-701-01
INSERT TOOL
6.84
173.6
Operating Envelope
EP 424 Air Drive Conguration
Single-Point Operation
81-000-03
11.90
302.3
(SEE 81-305-00
FOR FULL LEG CHART)
AIR REQUIREMENTS
AIR CONSUMPTION 95 cfm [2690 l/min]
PRESSURE 90 PSI (6.2 bar)
1/2 NPT
17.41
442.3
AXIAL FEED: .071" [1.80] PER FEED
HANDLE REVOLUTION
(CLOCKWISE)
7.66
194.5
FEED RATE: .0052" [.132]
PER TRIP ENGAGED
TOTAL STROKE: 6.5" [165.1]
3.50
88.9
MAX TRAVEL
&
HOLDER
56-205-01
.50
12.7
52-701-01
INSERT TOOL
ON MANDREL
THREAD ENGAMENT
8.19
208
25.35
643.8
6.84
173.6
27.15
689.7
20 RPM
MAX FREE SPEED
13.00
330.2
MAX FLOW 15 GPM [57 LPM]
MAX PRESSURE 2000 PSI [138 BAR]
Operating Envelope
EP 424 Hydraulic Drive Conguration
Single-Point Operation
81-000-04
11.94
303.2
SEE 81-305-00
FOR FULL LEG CHART
MIN
3.27
MIN
83.1
MIN I.D. WITH
3.15
80.1
.50
12.7
Operating Envelope
EP 424 Standard Mandrel and Extension Legs
81-303-00
MAX
MAX
4.20
MAX I.D. WITH
"A"
MIN
MIN POSITION
"B"
MAX POSITION
MAX
1.79
45.3
16.39
416.2
13.68
347.4
1.19
30.1
Operating Envelope
EP 424 Rotating Tool Head
81-304-00
TOOL HOLDER
SHOWN IN OUTER POSITION
1.38
34.9
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