Southbend SB1263 User Manual

MODEL SB1263

TAPER ATTACHMENT

Instruction Sheet

PHONE: [phone] • www.southbendlathe.com

This taper attachment is heavy! Get
assistance when installing it on the lathe.
Wear heavy-duty leather boots with toe
protection, and keep hands and fingers away
from all pinch points. Ignoring this warning
can lead to severe crushing injuries!

Introduction

This taper attachment mounts quickly to the
back bedway of your lathe, as shown in Figure 1.
Accurate tapers can be cut without repositioning
the attachment or having to offset the tailstock.

Specifications

Designed for Lathe Models ... SB1039, SB1049–52

Taper Per Inch Range ........................ ±0.00°–0.18”

Maximum Taper Length ......................................9"

Minor Inch Scale Divisions .............................0.01”

Major Inch Scale Divisions .............................0.02”

Taper Angle Range ....................................±0°–10°

Minor Angle Scale Divisions...............................

Major Angle Scale Divisions ................................1°

Construction .................................. Cast Iron, Steel

Net Weight ................................................... 49 lbs.

Shipping Weight ........................................... 60 lbs.

Factory ........................................................ Taiwan

1

⁄2°

Figure 1. Taper attachment installed on rear of lathe.

Note: Splash guard removed for clarity.

The Model SB1263 features an inches scale and
a degree scale. An angle adjusting knob with fine
threads achieves precise control when setting
tapers.

Another feature is the ability to use the taper
attachment without disengaging the cross slide
nut. This design allows the taper attachment to
be functional at any time by simply tightening
the two deadman clamp cap screws, which lock
the deadman clamp to the rear lathe way.

Copyright © January, 2012 by South Bend Lathe Co. Revised January, 2014 (ST)

WARNING: No portion of this manual may be reproduced without written approval.

For Product Manufactured Since 9/11 #TS14639 Printed in Taiwan

Model SB1263

Identification

Deadman

Clamp

INSTRUCTIONS

Taper

Attachment

Body

Mfg. Since 9/11

Taper Amount

Per Inch Scale

Rear Travel

Stop

Deadman

Arm

Arm

Clamp

Figure 2. Model SB1263 identification.

Serious personal injury could occur if you
connect the lathe to power before completing
the setup process. DO NOT connect power
until instructed to do so later in this manual.

Angle
Scale

Dovetail

Taper

Adjustment

Knob

Gib

Adjustment

Screws

Untrained users have an increased risk
of seriously injuring themselves with this
machine. Do not operate this taper attachment
until you have understood this entire manual
and received proper training.

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This item was carefully packaged to prevent
damage during transport. If you discover any
damage, please immediately call Customer
Service at
need to file a freight claim, so save the containers
and all packing materials for possible inspection
by the carrier or its agent.

Mfg. Since 9/11 Model SB1263

INSTRUCTIONS

Unpacking

[phone] for advice. You may

Inventory

Inventory (Figure 3) Qty

A. Cap Screws M8-1.25 x 45mm ........................4

B. Taper Attachment Assembly ......................... 1

C. Taper Pins 8.7 x 7.7 x 47mm ......................... 2

D. Deadman Clamp Assembly ...........................1

E. Deadman Arm Assembly ............................... 1

A

B

Required for Setup

The items listed below are required to
successfully set up and prepare this taper
attachment for operation. The installation
is intended to be permanent and will take
approximately one hour.

For Assembly

• Another person

• Cotton shop rags

• Mineral spirits

• Safety glasses

• Oil can with any general machine oil

• White lithium grease

• Wrench 17mm

• Hex wrenches 3, 4, 5, 6, and 8mm

• Phillips screwdriver #2

• Precision ruler

• Drill bit

• Tapered drill bit 8mm

• Spiral pin reamer #6
— Small end diameter: 0.2773"
— Large end diameter: 0.3540"

• Small metal hammer

• Dial indicator w/magnetic base

19

⁄64"

D

Figure 3. Model SB1263 inventory.

C

E

-3-

Model SB1263

INSTRUCTIONS

Mfg. Since 9/11

Cleanup

The unpainted surfaces of your taper attachment
are coated with a heavy-duty rust preventative
that prevents corrosion during shipment and
storage. This rust preventative works extremely
well, but it will take a little time to remove.

Be patient and do a thorough job cleaning your
taper attachment. The time you spend doing this
now will give you a better appreciation for the
proper care of the unpainted surfaces.

There are many ways to remove this rust
preventative, but the following steps work well
in a wide variety of situations. Always follow the
manufacturer’s instructions with any cleaning
product you use and make sure you work in a
well-ventilated area to minimize exposure to
toxic fumes.

Note: The inner surfaces of the taper attachment
body were lubricated at the factory and do not
need to be cleaned at this time.

Before cleaning, gather the following:

• Disposable rags

• Cleaner/degreaser (WD•40 works well)

• Safety glasses & disposable gloves

• Plastic paint scraper (optional)

Basic steps for removing rust preventative:

1. Put on safety glasses and gloves.

Installation

This procedure explains installation of the taper
attachment on a lathe without a DRO installed.
If the lathe has a Fagor DRO, the aluminum
mounting plate (or the taper attachment
housing) will need to have a small notch cut into
it (see Figure 4) to ensure proper fit.

DRO Mounting Plate

Notch

Figure 4. Notch in DRO mounting plate, allowing taper

attachment housing to fit.

To install the taper attachment:

1. DISCONNECT LATHE FROM POWER!

2. With the help of another person, remove the

splash guard on the rear of the lathe.

3. Move the cross slide all the way toward the

front of the lathe to fully expose the lead­screw end bracket (see Figure 5).

2. Coat the rust preventative with a liberal

amount of cleaner/degreaser, then let it soak
for 5–10 minutes.

3. Wipe off the surfaces. If your cleaner/

degreaser is effective, the rust preventative
will wipe off easily. If you have a plastic
scraper, scrape off as much as you can first,
then wipe off the rest with a rag.

4. Repeat Steps 2–3 as necessary until clean,

then coat all unpainted surfaces with a
quality way oil to prevent rust.

-4-

Leadscrew

Cap Screw

(1 of 2)

Figure 5. Leadscrew end bracket and fasteners.

4. Remove the two cap screws from the end

bracket (see Figure 5).

End Bracket

Lock Nut

Set Screws

(2 of 4)

!

Mfg. Since 9/11 Model SB1263

INSTRUCTIONS

5. Remove the four set screws (see Figure 5)

from the saddle. These holes will be used to
mount the taper attachment to the saddle in
a later step.

6. Remove the lock nut (see Figure 5) from the

end of the leadscrew.

7. Keep the bearing parts together in the same

orientation as they were installed as you
remove them and the end bracket from the
leadscrew (see Figure 6).

Important: If a race is stuck to the surface of the

end bracket, use penetrating oil or mineral
spirits to separate the parts. Do not pry a
race loose, as this can damage it.

Inner Bearing Assembly

Outer Bearing

Assembly

9. Loosen the set screw that secures the slide

block to the pivot pin, as shown in Figure 8.

Pivot

Pin

Slide

Block

Figure 8. Slide block removal.

10. Lift the slide block off the pivot pin. Make

sure not to dislodge the brass anti-scoring
plug shown in Figure 9.

Note: If the anti-scoring plug falls out of the slide

block, use a dab of grease to hold it in place.

End

Bracket

Figure 6. Leadscrew end bracket removed.

8. Remove the four flat head screws that secure

the top cover, then remove the cover (see
Figure 7).

Brass

Anti-Scoring

Plug

Figure 9. Slide block brass anti-scoring plug.

Figure 7. Attachment body top cover removed.

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