|
Feature
|
Advantage
|
Benefit
|
|
1.
Heads and Caps
|
Square,
precision-machined 6061T6
anodized aluminum. |
Corrosion
resistant. Assures concentricity
of tube, bearing, cushion
and piston rod. Can be made
proximity switch ready to
accept same probe-length switches
at each end without spacers. |
|
2.
Cylinder Tube
|
Solid 6061T6 aluminum tube;
precision honed to 12/15 micro
inch finish; hard coat anodized
.001" thick on both ID
and OD. |
Resists wear and corrosion;
also reduces wear on piston
seals. |
|
3.
Wear Band
|
Delrin™
material. |
Creates
low friction, long lasting
wear surface, which prevents
scoring of cylinder tube inner
wall. Will not expand with
moisture. |
|
4.
Lubrication
Reservoirs
|
Located underneath wear band
inside piston and also inside
the bearing cartridge. |
Provides effective way of
metering maximum amount of
lubricant to all areas over
a long time period. Not subject
to air turbulence and contamination. |
|
5.
Lubricant
(not shown)
|
Teflon™
based grease. |
Long
lasting lubrication of piston
seals, inner cylinder wall
surface, bearing cartridge
ID, rod seal and rod wiper. |
|
6.
Piston
|
One-piece precision-machined
6061T6 hard coat anodized
aluminum or steel piston with uniform polished
steel, black oxided, cushion
hubs on both sides, threaded
onto piston rod, staked and
secured with Loc-Tite™. |
Prevents corrosion and air
leakage; anchored onto piston
rod with minimum undercut
providing maximum strength.
Additional pinning onto rod
is optional. Aluminum piston required for magnetic piston sensing - see #19. |
|
7.
Tube Seals
|
Buna-N
Nitrile axial placed O-Rings. |
When
combined with accurately torqued
tie rods, prevents extrusion
of seal and air leaks under
pressure. |
|
8.
Cushion
Adjustment Screw
|
Steel needle valves with Buna-N
O-Ring sealed screws, held
captive with locking snap
rings. |
Accurate fine adjustment of
cushioning speed; no air leakage
and safe for all users due
to internal captive screws. |
|
9.
Rod Seal
|
80
durometer, rounded lip, pre-lubricated,
carboxylated nitrile cup style. |
Smears
grease through ID of bearing
cartridge extending seal life
within. Resists abrasion;
significantly increases life
and prevents leakage around
piston rod. |
|
10.
Rod Wiper
|
80 durometer, sharp double
lip, pre-lubricated, carboxylated
nitrile seal. Provides additional
sealing benefit beyond the
rod seal. |
Inside edge always lubricated
extends life significantly,
prevents dirt and grit from
entering bearing cartridge
and cylinder. |
|
11.
Piston Rod
|
High
yield strength steel, case
hardened OD to 50-55 RC. Core
hardness to 28-34 RC. Hard
chrome plated .0003/.0005”
thick and polished to 12/15
micro inch finish. Rolled
threads. |
Resists
wear. All NFPA rod and thread
sizes, including female and
studded male ends available,
plus metric threads. Provides
positive connections to existing
machine components. |
|
12.
Bearing Cartridge
|
Floating, self-aligning in
either ductile iron or SAE
660 bronze with internal lubrication
reservoir. Optional "Slip
Tuff" coated cartridge
is also available for heavy
side loaded applications. Retained by plate with cap
screws; strong and shock resistant.
A Buna-N O-ring located around
the cartridge OD prevents
leakage.
|
Float condition minimizes
piston rod misalignment by
reducing side loading. ID
of bearing cartridge, rod
seal and rod wiper lubricated
on each stroke, reducing wear.
Easily removed for maintenance
without special tools to disassemble
cylinder. Optional "Slip
Tuff" bearing provides
lubristic wear surface with
hardness characteristics that
significantly reduce galling
and bearing cartridge failure
under severe side loaded operating
conditions. |
|
13.Tie
Rods
|
Made
from 100,000 psi minimum yield,
stress-proof, medium carbon
steel with rolled threads
at each end. |
Provides
maximum strength for connecting
cylinder mounts and used with
lock nuts to prevent loosening
in service. Accurate torquing
prevents leaks at tube seals. |
|
14.
Cushion Hubs
|
Steel with 8/12 micro inch
finish RMS. Black oxided to
prevent rusting and corrosion.
Steel material permits the
use of in-port cylinder head
mounted proximity switches. |
Uniform on each side of piston
to eliminate different size
cushion seals and reduce spare
parts inventory. Smooth surface
stops cushion seal wear and
provides air-tight accurate
operation. Ideal for proximity
switch applications. |
|
15.
Piston Seals
|
80
durometer, rounded lip, pre-lubricated,
carboxylated Nitrile U-Cups. |
Resists
abrasion; when used with Peninsular's
internal lubrication system,
provides considerably less
wear and increases operating
life. |
|
16.
Cushion Seals
|
90 durometer floating check
type Urethane seals eliminate
ball checks and related parts. |
Low friction breakaway and
100% air-tight cushioning assures smooth maximum effectiveness.
Metal to metal cushions are
eliminated and same size seals
at each end reduce parts inventory. |
|
17.
Ports
|
NPT
standard, SAE O-Ring optional.
Metric and other thread size
options. |
Universally
adaptable to any hose or fitting. |
|
18.
Optional Proximity Switch
Capability (not shown)
|
Allows
for non-contact piston position
sensing at near end of stroke.
Precision machined cylinder
heads and piston cushion hubs
allow for in-port mounting
of “RF inductive” proximity
switches using the same switch
probe length at each cylinder
end without shims or spacers
underneath the switch. |
Self-contained
switch probe not subject to
contamination. This patented
design creates the same air
gap between the sensing probe
and target (cushion hubs),
thus providing consistent,
reliable and repeatable stroke-to-go.
Eliminates the design and
construction of brackets necessary
to mount mechanical limit
switches. US Pat. No. 4,726,282
& D 295,753 |
|
19.
Optional Piston
Magnet (not shown,
but located under
wear band)
|
Tie-rod
mounted reed switches can
sense high gauss, shunted
“rare-earth material” magnet,
anywhere along the cylinder
stroke. Stronger magnetism
outside of the cylinder tube
insures actuation of the reed
switch. |
Tie-rod
mounted reed switches sense
strong magnetic field provided
by shunted magnet in aluminum piston,
allowing piston rod location
to be determined wherever
external switches are placed.
Reed switches may be locked
onto tie-rods at factory,
as an option, to prevent sliding
due to cylinder vibration. |
|
Field
Service and Engineering
Support
We understand the importance
of technical assistance
and the availability of
products and repair parts.
That’s why we have
a distributor network and
technical representatives
throughout the country.
You can also reach our Customer
Service Department for help.
Complete
Repair Facility
Peninsular repairs all air
and hydraulic cylinder makes
and models. All cylinders
are performance tested before
shipment. Estimates are
provided prior to repair
activity.
Easy
Order Procedure
For your convenience, please
refer to the “How to
Order and Specify Section”.
Just follow steps A thru
J in the example and forward
to us for price and delivery
information or contact our
Customer Service Department
or your Authorized Peninsular
Distributor.
|
NFPA
Aluminum Medium Duty Air Cylinder-Model
LM 
