Joyce DSWJ2410 User Manual

Joyce/Dayton Corp

Operation and Maintenance Manual for Joyce/Dayton

Stainless Steel Machine Screw Jacks

.

The product described in this catalog is for industrial use only. It may not be used to lift or
support people without prior written approval from the Joyce/Dayton Corp. Recommendations in
this manual for installation, operation and maintenance must be followed to ensure safe use. All
persons responsible for the installation and use of Joyce Stainless Steel Jacks must be familiar
with the contents of this manual.

Customer is responsible for providing travel stops.

©2011 Joyce/Dayton Corp. All rights reserved FB0164 – 6/11

Table of Contents

Section I – General Information

1-1 Contact Joyce/Dayton.............................................................................................2

1-2 Purpose and Scope..................................................................................................2

1-3 Receipt of Product ...................................................................................................2

1-4 Warranty.....................................................................................................................2

1-5 Precautions of Use and Installation......................................................................3

1-6 General Installation Instructions............................................................................3

Section II – Maintenance

2-1 Lubrication ................................................................................................................4

2-2 Repair Parts...............................................................................................................4

2-3 Disassembly of Stainless Steel Machine Screw Jacks......................................5

2-4 Inspection of Components.....................................................................................6

2-5 Assembly of Stainless Steel Machine Screw Jacks...........................................6

Section III – Views & Parts list

3-1 Exploded View..........................................................................................................7

3-2 Parts List ...................................................................................................................8

3-3 Specifications............................................................................................................9

3-4 Serial Number and Maintenance............................................................................11

Section I

General Information

1-1 Contact Joyce/Dayton Corp.

Joyce/Dayton Corp.
P.O. Box 1630
Dayton, OH 45401
[phone] (US and Canada only)
[phone] [phone] Fax
Email: [e-mail]
Website: www.joycedayton.com

1-2 Purpose and Scope

This manual provides installation, operation and maintenance instruction for standard
Joyce/Dayton Stainless Steel Machine Screw Jacks. Although this manual covers the
standard jacks and most variations there may be some jacks that vary significantly from
this manual. For special jacks not covered, please contact Joyce/Dayton Corp. for
assistance.

1-3 Receipt of Product

All equipment should be immediately inspected upon receipt for any damage and to verify
correct product and quantities. Any problems should be reported to Joyce/Dayton Corp.
and the freight carrier as soon as possible. Products returned without a Return Goods
Authorization (RGA) form will not be accepted.

1-4 Warranty

Seller warrants its products to be free from defects in material and workmanship under
normal and proper use in accordance with instruction of seller for a period of one year
from the date of shipment to buyer. Seller's liability under such warranty or in connection
with any other claim relating to the products shall be limited to the repair, or at seller’s
option, the replacement or refund of the purchase price, of any products or parts or
components thereof which are returned to seller freight prepaid and which are defective in

2

material or workmanship. Products or parts or components thereof, which are repaired or
replaced by seller, will be returned to buyer freight collect. This warranty is not intended to
cover consumer products, as defined in the Magnuson-Moss Warranty-Federal Trade
Commission Improvement Act, 15 U. S. C. Sections 2301-12, which are purchased by
buyer for purposes other than resale. If buyer is not intending to resell the products, and if
the products are consumer products as defined in the Magnuson-Moss Act, the foregoing
warranty, but not the limitation of seller's liability, shall be null and void. EXCEPT AS
EXPRESSLY STATED ABOVE, SELLER MAKES NO WARRANTY, EXPRESS OR
IMPLIED, WHETHER OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR
PURPOSE OR USE OR OTHERWISE, ON THE PRODUCTS, OR ON ANY PARTS OR
LABOR FURNISHED DURING THE SALE, DELIVERY OR SERVICING OF THE
PRODUCTS.

1-5 Precautions of Use and Installation

1. Side loading of the lifting screw is not permitted in the dynamic operation of the jack.
A limited side load is allowable in the static condition. Contact Joyce/Dayton for the
allowable side load for specific applications.

2. Mechanical stops are not provided on the lifting screw unless requested. Therefore, it
is possible to drive the screw out of the jack sleeve (housing). It is the customer’s
responsibility to provide travel limit devices on all jacks. A mechanical stop, if
provided is only an auxiliary device to limit the travel of the lifting screw. Engaging a
mechanical stop during jack operation can cause damage to the internal jack
mechanism.

3. In most applications, factory or manufacturer-assisted installation is not required.
However, it is necessary that appropriate, qualified personnel perform the installation
of Joyce/Dayton products.

4. Joyce/Dayton stainless steel screw jacks are not rated for shock-loading, extreme
vibration or critical speed conditions (high speed or long-length screw.) It is the
responsibility of the user to ensure these conditions are not imposed on a jack or the
power transmission equipment. Contact Joyce/Dayton Corp. for technical assistance.

5. In the event that service or maintenance is required, the load must be secured or
removed before any work can begin.

6. The stainless steel machine screw jacks can be mounted and operated in any
orientation. When used in a horizontal position, the worm should be mounted parallel
with the horizon and below the gear to ensure proper lubrication.

7. Never allow the jack screw to retract beyond the minimum closed position, as damage
to the jack can occur.

8. Boots or protective bellows covers should be used to protect and keep the lifting
screw clean in dusty or abrasive environments.

9. For continuous or high-duty cycles inquire with your local sales representative or
consult Joyce/Dayton Corp. about other products suited for near-continuous duty
operation (i.e. Bevel Ball actuators, which are not stainless steel).

1-6 General Installation instructions

1. Ensure that all personnel who will service or operate equipment are familiar with its
use and limitations.

2. Secure or remove the load before any installation procedures begin

3. Be certain the rating of the jack meets or exceeds the load.

4. The jacks must be mounted on a structure sufficient to support the maximum possible
load. The structure must be rigid. An under-designed structure could lead to bending
of the lifting screw causing premature wear or failure.

5. Drive shaft alignment is critical. Mis-alignment will cause reversing stresses in
rotating members and will lead to fatigue failure. Correct coupling specification is
important.

6. In a system with shafts, miter boxes, etc., confirm that the shafts and jacks operate
without binding or excessive force before powered drive devices are engaged.

3

7. When fastening the load to a jack, make sure the jack is in the retracted position. This
positions the load accurately with respect to the jack screw centerline. Never pull the
screw to one side to make connection with your structure. Fully extend the jack to
make sure the load is aligned with the lifting screw.

8. Jacks should be mounted with S.A.E. Grade 8 bolts or equivalent.

9. Torque all mounting bolts in a symmetric pattern to avoid damage to the sleeve.

10. Shaft and coupling guards are the responsibility of the user.

11. Optional limit switches furnished with the jacks are NOT preset and require field
adjustment before use. These limit switches do not have stainless steel housings.

Section II

Maintenance

2-1 Lubrication

1. Jacks are lubricated before leaving the factory.

2. For normal operation, jacks should be greased at least once per month. Under
extended use, grease twice monthly or as conditions dictate. Grease through the
fitting on the jack with hand or power operated equipment. Grease with No. 1
Consistency Grease. Do not allow jacks to operate without lubrication. It is the
responsibility of the user to maintain sufficient lubrication of the jack.

3. The products listed below are recommended by the lubricant manufacturers to meet
the requirements for normal operation. The listing of brand names is solely for the
convenience of users of Joyce equipment and their lubricant suppliers; it does not
constitute any endorsement. Joyce/Dayton assumes no responsibilities for the quality,
performance or availability of any listed products

COMPANY.....................................BRAND NAME

Mobilgrease ..................................XHP 461

Shell Oil Company.......................Retinax HD NLGI 1

Shell Oil Company.......................Albina SLC 460

Mobil Oil.........................................Mobilith SHC PM 460

4. For operation above 250° F or extreme loading, consult the Engineering Department of
Joyce/Dayton Corp. ([e-mail]).

5. Do not operate jack without lubrication.

6. Total grease capacity by jack type:

Jack Capacity Shots

2 ton 13 4.5 oz
5 ton 26 9 oz

10-15 ton 50 17 oz

20 ton 95 33 oz.
25 ton 140 49 oz.

2-2 Repair Parts

Obtain repair parts by contacting Joyce/Dayton Customer Service at [phone], (937)
294-6261, [phone] (facsimile), [e-mail], or call your local sales
representative. When ordering repair parts, please supply the serial number (located on
the jack nameplate).

Approximate

Weight

4