Introduction, Specifications | Southbend SB1224 instruction

MODEL SB1224

12" 3-JAW SCROLL CHUCK

Instruction Sheet

PHONE: (360) 734-1540 • www.southbendlathe.com

Introduction

This chuck uses a direct-mount camlock system to attach to the spindle. Direct-mount chucks provide a number of advantages over chucks that require a back plate for mounting.

The main benefit is a larger maximum working area between the chuck jaws and tailstock. The increased space is created by the absence of a back plate between the chuck and spindle.

Another benefit is that direct-mount chucks require less initial setup time because the machinist is not required to machine a back plate to fit the chuck.

Reversible Top Jaws	Two-Piece Jaws
Two-Piece
Center
Split
Chuck
Camlock	Rear	Direct
Studs		Direct
Studs		Mount
	Chuck Cap	Mount
	Chuck Cap	Back
	Screws	Back
	Screws
		Threaded
		Pinion
		Retaining
		Pins

Figure 1. Main features of this chuck.

Incorrect use of this tool can result in death or serious injury. For your own safety, read and understand this entire document before using.

Specifications


Mounting Type	Direct Mount D1-8 Camlock
Chuck Outer Diameter		....................12.2" (310mm)
Chuck Bore Diameter		4.05" (103mm)
OD Clamping Range		0.12"–4.65" (15–300mm)
ID Clamping Range		1.78"–4.61" (90–290mm)
Static Clamping Force			9890 lbs
Maximum Chuck Key Torque			137 ft/lbs
*Maximum Speed			1800 RPM
Chuck Jaw M12 Cap Screw Torque			78.8 ft/lbs
Rear Chuck M12 Cap Screw Torque			78.8 ft/lbs
Chuck Weight			105 lbs
Country of Origin			Taiwan

*Even if a tailstock and steady rest are used, the maximum speed rating may not be SAFELY reached with certain workpieces. The workpiece must be balanced and appropriately sized for the chuck and lathe, and the chuck must be properly maintained to achieve maximum clamping force. As spindle speeds increase, centrifugal force also increases. If centrifugal force becomes too great, the workpiece can be thrown from the chuck with deadly force. Always use good judgment with each setup!

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

#CR13937 Printed in Taiwan