Southbend SB1314 Benutzerhandbuch

6.  Remove the back plate from the lathe and

place it on a workbench.

7.  Set the chuck on the back plate, and roughly

align the chuck using the alignment set

screws.

8.  Use a transfer punch to mark the back plate.

If a transfer punch is not available, a drill

bit of the same size as the mounting holes in

the chuck can be used. Lightly tap on the bit,

rotate it 90° and tap it again.

9.  Center punch the marks. Drill and tap the

holes for M10-1.5 threads.

10.  Clean and stone all mating surfaces until

they are perfectly clean and no burrs exist.

11.  Install the chuck and snug the M10-1.5 cap

screws in an alternating pattern until you

reach a final torque of 53.5 ft/lbs. Alternating

the tightening process avoids chuck warpage.

If you are installing the chuck by threading

the M10-1.5 hex bolts into the chuck from

the back side of the mounting plate, repeat

Step 11 on these bolts, and torque the bolts

to 30 ft/lbs. 

12.  Using a 6mm hex wrench, lightly snug all

four chuck alignment set screws.

13.  Clamp a 1" diameter test blank into the

chuck, install a test indicator. Rotate the

chuck by hand and measure the chuck

concentricity.

14.  Based on your readings, adjust the

alignment set screws to bring the chuck

into final alignment. The typical alignment

repeatability for the same diameter

workpiece when swapping will be 0.0005".

For maximum accuracy, clamp your

workpiece in the chuck and realign by

tightening or loosening the set screws. If

all the set screws are tight, correction of

alignment can also be done by loosening one

or more set screws.

Note: If the chuck must move 0.001" or less to

bring the workpiece into alignment, it is not

necessary to loosen the chuck mounting bolts

before using the adjustment set screws.

•  

A chuck key left in the

chuck can become a dangerous projectile

when the spindle is started. Always remove

the chuck key after using it. Develop a habit

of not taking your hand off of a chuck key

unless it is away from the machine.

• 

 Disconnect the lathe

from power before installing and removing

the chuck or doing any maintenance or

adjustments. Accidental lathe startup can

cause severe injury or death.

• 

 A thrown workpiece may

cause severe injury or even death. When

swapping the chuck jaw positions, use a

torque wrench to re-torque the M8-1.25 

jaw mounting cap screws to 29 ft/lbs. When

clamping a workpiece, maximum gripping

force is attained at full jaw and scroll gear

engagement. If the jaw and scroll gear are

partially engaged, clamping force is reduced.

•  

 Exceeding the

maximum rated speed indicated on the

chuck, or using excessive spindle speeds

with an unbalanced workpiece, can cause

the workpiece to be thrown from the chuck

causing a severe impact injury or even death. 

Always use the appropriate spindle speed for

the job.

•  

 Large chucks are very

heavy and difficult to grasp, which can lead

to crushed fingers or hands if mishandled.

Get assistance when installing or removing

large chucks to reduce this risk. Protect your

hands and the precision ground ways by

using a chuck cradle or piece of plywood over

the ways of the lathe when servicing chucks.

•  

 Often chuck jaws will

protrude past the diameter of the chuck and

can contact a coolant nozzle, tooling, tool

post, or nearby components. Before starting

the spindle, make sure the workpiece and

the chuck jaws have adequate clearance by

rotating the spindle through its entire range

of motion by hand.

-2-

Mfg. Since 3/10

Model SB1314