Sheffer CL SERIES - Manual (Page 2)

CLA 3 /
4
" AND 1 1 /
8
" BORES & CLH 1 1 /
8
" BORE ONLY
Construction
1 CL-1
CLA CONSTRUCTION
PISTON RODS are 1 /
4
" or 5 /
16
" diameter on all CLA cylinders
dependent on bore size. They are super-finished stainless steel
for maximum corrosion resistance.
CYLINDER TUBES are high-tensile aluminum alloy tubing,
hard anodized finish.
PISTONS are aluminum, secured by a roll pin.
HEADS are accurately machined from aluminum bar stock.
SPRINGS employed in the spring return models exert the
following forces to return the piston and rod: The 3 /
4
" bore
models have a spring which exerts a 4 lbs. force as installed
and a 9.4 lbs. force when compressed by stroke. The 1
1 /
8
"
bore models rate is 5 1 /
2
lbs. installed and 9 lbs. compressed.
All spring forces are approximate.
BRONZE BUSHING oil impregnated, for good lubrication
and long life.
CYLINDER ASSEMBLY is held together with high-tensile
steel tie rods. This is recognized by industry to be the best
way to provide pre-stressed construction for rough service.
ROD SEAL is a self-adjusting modified U-cup.
PISTON SEALS are self-adjusting modified U-cups.
TUBE SEALS are flat gaskets, retained type, to prevent any
possible extrusion.
PORTS are 1 /
8
" N.P.T.
MOUNTING may be accomplished by attaching the head, the
cap, or side mounting by holes provided in the universal
mount. Tie rod holes tapped thru 8-32 or 10-32 for face
mounting. Pivot or clevis mount may be made by attaching
brackets with cap screws provided (See Accessories Brochure).
Stud may be threaded into mounting plate, or secured by use
of jam nut provided.
CLH CONSTRUCTION
PISTON RODS are of adequate size, of approximately
100,000 psi yield steel. They are ground, polished and hard
chrome plated for maximum wear and corrosion resistance.
Wrench flats are standard.
CYLINDER TUBES are high-tensile aluminum alloy with
hard anodized finish.
PISTONS are steel for strength and wear resistance, fastened to
the rod by a self-locking nut.
HEADS are cold rolled steel to provide best strength
characteristics and black oxided for corrosion resistance.
SPRINGS employed in the spring return models exert the
following forces to return the piston and rod: Installed force is
12.8 lbs. Compressed by stroke force is 27.5 lbs. All spring
forces are approximate.
BRONZE BUSHING oil impregnated, for good lubrication
and long life.
CYLINDER ASSEMBLY is held together with high yield
steel tie rods. This is recognized by industry to be the best
way to provide pre-stressed construction for rugged service.
ROD SEAL is a self-adjusting modified U-cup.
PISTON SEALS are self-adjusting modified U-cups.
TUBE SEALS are O-rings located to prevent any possible
extrusion.
PORTS are 1 /
4
" N.P.T.
MOUNTING may be accomplished by attaching the head, the
cap, or side mounting by holes provided in the universal
mount. Tie rod holes tapped thru for face mounting. Pivot or
Clevis mount may be made by attaching brackets with cap
screws provided (See Accessories Brochure).
PRESSURES of 250 psi pneumatic and up to 1500 psi
hydraulic service.