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Allenair Small Bore Cylinders
These fully repairable cylinders are
available in bores sizes of 1/2", 3/4" and 1-1/8" and come with
1/8"NPT ports. They are rated at 150psi pneumatic or hydraulic and have a
5-10psi breakaway point. The 1/2" and 3/4" cylinders use a low friction
U-cup seal, a 1/4" 416 Stainless Steel rod, and Duronze piston. The 1-1/8"
cylinders use an all O-ring construction, aluminum piston, and a 5/16" 416 Stainless
Steel rod. Five models of Small Bore cylinders are available. The SM
single ended model has a port on the rear head and is designed for nose mounting.
The SMD double ended model uses a single rod which protrudes from
either side of the cylinder so that it retracts on one side as it extends on the other.
The SMT single ended cylinder feature a male clevis on the rear
head for various mounting options. The SP single ended model is the
same as the SM except it comes with a square front head for simplified mounting purposes. The last model is the SPD double ended model which uses a single
rod like the SMD, but replaces the standard heads with square heads to simplify the
mounting.
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Cylinder Bore Sizes |
Mounting Bracket Part Numbers |
| Foot Mount |
Flange Mount |
Swivel Bracket |
Rod Clevis, Nut & Pin |
| 1/2" |
SM-32 |
SM-29 |
139 |
SM-545 |
| 3/4" |
SM-32 |
SM-29 |
139 |
SM-545 |
| 1-1/8" |
SM-32 |
SM-29 |
139 |
SM-145 |
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