1. Piston Rods—5/8"
thru 4" diameter are medium carbon steel with 100,000 psi minimum
yield. Piston rods over 4" diameter
have yield strengths between 50,000 and 90,000 psi. Sizes 4/8" thru
31/2" diameter are induction case hardened to 54 Rockwell C. All piston
rods are hardchrome plated and highly polished.
2. Rod Wiper—Polyurethane,
double lip type wiper designed to protect the piston rod, bearing and
rod seal, is standard for
all rod sizes. Also, metallic scrapers and Viton wipers are available
for all rod sizes.
3. Bolted Rod Gland Cartridge—Heavy
wall, ductile iron bearing is accurately piloted in head to assure
perfect alignment,
designed to accept a variety of seal styles.With certain exceptions,
the cartridges can be removed without removing mounts or tie rod
nuts.This eliminates the necessity of cylinder disassembly to replace
the rod seals or rod bearing. Bearings are held in place with bolted
steel retainer plates. Bearings used for a given rod size are
interchangeable into any cylinder bore with the same rod diameter
(except for bearings used with 11/2", 2" and 21/2" bores with maximum
rod sizes).
a. Rod Seal—Polyurethane
compound, flexible lip type rod seal has excellent abrasion resistance
and is wear compensating.
Inherent characteristics of the material and design assure leakproof
performance and long life.
b. Rod Bearing—Ductile
iron material insures low friction, high load capabilities and long
life.
4. Ports—Large
unrestricted ports permit maximum flow with minimum pressure drop.Heads
may be rotated independently at 90° intervals for convenient
port location.
5.Tube Seals—Positive
sealing, synthetic rubber “O” rings seal tube I.D.
6.Tube—Steel
tubing is used on 11/2" thru 20" bore. It is microhoned and chrome
plated to assure smooth operation with
minimum friction.Other tubing materials are also available.Tubing is
standard for 10" thru 18" bore sizes.Other tubing materials are also
available.
7. Piston Seals—Flexible
lip type piston seals with non-extrusion rings provide positive
sealing, low friction and long life.
8. Piston—High
grade alloy iron, 11/2" thru 8" bores, also in 20" bore; steel piston
for 10" thru 18" bore sizes. Pistons are one piece, pilot fitted to
piston rod and locked.
9.Tie Rods and Nuts—Tie
rods are made from 100,000 psi minimum yield, medium carbon steel.They
are pre-stressed at
assembly with hi-strength alloy hex nuts to minimize the possibility of
tie rod elongation.
10. Heads and Caps—Rolled
steel accurately machined to assure perfect alignment of piston rod
bearing, piston rod, piston, and tube. Heads and caps pilot on tube
O.D. to prevent “breathing” and provide additional
insurance against leakage.
11. Needle valves and check
valves— Flush type
needle valves and check valves are supplied. Large drilled passages
provide maximum control of cushioning effect and assure rapid full
power starts at beginning of stroke. Needle valves begin to leak prior
to disengagement to prevent valve blow out. Ball checks are permanently
retained.
12. Cushions—Self-aligning,
synthetic rubber type seals provide a positive leak-proof cushion.This,
together with adjustable cushion needle valve, offers an extremely
accurate means of obtaining most efficient cushion characteristics for
a variety of loads and speeds.
13.Wrench Flats—Large
wrench flats are chamfered to protect rod gland packing in
installation. All standard piston rods
through 51/2" diameter are furnished with two wrench flats. Additional
flats are available upon request.
14. Pre-lubricated—A
specially compounded tenacious lubricant permits operation on
non-lubricated air.This assures long life under normal operating
conditions.This ecological feature eliminates exhausting oil mist into
the atmosphere.
Mounts—All
mounts are of steel plate fabricated steel, accurately machined for
precise mounting.
JIC—These
cylinders are designed to conform to JIC standards.