Southbend SB1224 - Manual (Page 7)

Maintenance
A chuck can only achieve its maximum clamping
force when its internal components are clean and
well lubricated.
During operation, centrifugal force displaces
and thins the lubricant inside the chuck, forcing
it out over time. If the chuck is exposed to
cutting fluid, this process happens even faster. If
maintenance is not followed daily, the chuck will
lose its internal lubrication and collect cutting
fluid sludge, rust, and metal chips—which can
cut the maximum chuck clamping force in half!
A chuck with reduced clamping force has a much
higher risk of losing its grip during operation and
throwing the workpiece with deadly force.
Items Needed Qty
Hex Wrench Set (Metric) ......................................1
High Resolution Caliper 8" ...................................1
Crocus Cloth & Wire Brush ............................ 1 Ea
Diamond Hone or Dressing Stones ...........Various
Files & Thread Chasing Tools ...................Various
Mineral Spirits and Cotton Rags ...... As Required
Calibrated Torque Wrench ..................................1
Stiff 1" Brush for Applying Grease ......................1
Oil ........................ South Bend Way Oil #SB1365
Chuck Grease ............................. Bison #7-799-025
(or Equiv. Moly-Disulphide Chuck Grease)
Chuck Service
• Check/correct loose mounting bolts.
• Use a vacuum, rag, or brush to clean the
chuck after use.
• Wipe down the outside of the chuck with a
light machine oil or way oil.
Daily Maintenance
Regular Lubrication
Recommended Lubricant
Chuck Grease ............................. Bison #7-799-025
(or Equiv. Moly-Disulphide Chuck Grease)
Oil ........................ South Bend Way Oil #SB1365
Lubricate the scroll thread and jaw slides
regularly, using either chuck grease or way oil.
To lubricate, remove and clean the jaws, clean
chips off the scroll gear if necessary, then re-
install the jaws and apply lubricant to the scroll
gear and jaw sliding surfaces. Move the jaws in
and out to distribute the lubricant.
Chuck grease provides superior lubrication and
clamping force; its drawback is that chips easily
stick to it and get drawn into the chuck, leading
to binding and reduced clamping force.
Way oil is a good alternative lubricant to reduce
the amount of chips that stick to the chuck;
its drawback is a reduction of clamping force,
making it a poor choice for heavy clamping loads.
To avoid damage when servicing the chuck:
• Only clamp chuck parts in a vise equipped
with soft jaws or wood/aluminum blocks.
• Never use an open flame on chuck parts!
• Never strike the chuck with a steel hammer.
Instead use a brass hammer or soft mallet.
• Never apply force to stuck components if
you are unsure about how they are fastened
together. Refer to the instructions.
• When separating or removing mated
components, do not attempt to pry or wedge
them apart. Instead, patiently tap them at
various locations with a brass hammer or
mallet while rotating and pulling on them.
• If the scroll gear or retainer is stuck, soak
parts in penetrating oil or solvent (overnight
if needed) to break down grease suction, then
carefully rotate, lift, and tap it loose.
Proper chuck service requires full disassembly,
cleaning, and lubrication. Perform this service
every six months, or more frequently if the chuck
is exposed to dirty work environments, heavy
workloads, or cutting fluid.
Mfg. Since 1/11 Model SB1224
-7-
I N S T R U C T I O N S