Super Cylinders

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Super Cylinder

Downloadable Files:

Diaphragm Cylinders Catalog Pages (including Mounting Option & Dimensions) (652KB)

Super Cylinders

Extremely Sensitive Response
Very Low Friction
No Edge Seals To Replace
No Blow-By Leakage

Product Detail:

Diaphragm Air Cylinders are actuators made from elastomers, engineered metals and fabrics. They require no lubrication, are virtually frictionless, and economical. They can be used to provide lifting, clamping, pushing, coining, turning, and other linear force or actuation motions in many applications. The development of the long stroke rolling diaphragm for dynamic sealing proved to be the solution for many applications requiring low friction, no lubrication, low leakage, wide temperature variations, and low total cost. The popularity of the rolling diaphragm as a sealing means led to many requests for a standard line of “off the shelf” diaphragm cylinders; single and double acting, short and long stroke with a wide selection of effective areas. To meet these requests, the long stroke rolling diaphragm cylinder was developed and Bellofram has supplied many thousands of them since their 1965 introduction. Bellofram
Super Cylinders are standard spring-return cylinders equipped with linear ball bearings and hardened steel rods. This refinement allows an absolute minimum of friction for applications where maximum sensitivity is needed.

Super Cylinders are available only in spring-return varieties and in Series F stroke variations. All mounting options offered on standard cylinders are also available on super cylinders.

Operating Data
Size (Effec. Area) Sq. In.	Equiv. Bore Diam. In.	Single Acting/Spring Return
		Stroke +.03 -.12 Series F In.	Approx. Spring Force - Zero Stroke (lbs.)	Approx. Increase Force Per In. of Stroke (lbs.)
		Stroke +.03 -.12 Series F In.	Series F	Series F
4	2.3	1.8	6	3
6	2.8	2.4	9	4
9	3.4	3	12	4
12	3.9	3.6	18	6
16	4.5	4.2	24	8
24	5.5	5.24	36	11
30	6.3	6	54	14
36	6.8	6	54	14

Part Numbers:

Create Part Number:
SS	XX	F	XX	XXX
SS					Single Acting/Spring Return	Type
	XX				Area in Square inches 04, 06, 09, 12, 16, 24, 30 or 36	Size
		F			Series F: Determines Stroke	Series
			BP		Bellofram Product Standard	Rod
			SM		National Fluid Power Assc. Standard	Rod
				UM	Universal Mount	Mounting
				FM	Foot Mount
				CFM	Cap Flange Mount
				HFM	Head Flange Mount
				CBM	Clevis Bracket Mount
				CBS	Clevis Bracket Stud
Notes: Add to end of ordering data NS-No Spring Example:SS-12-F-SM-HFM is a single acting super cylinder, 12 sq. in., 3.6" stroke, SM rod end cylinder with a Head Flange Mount.

Options:

Repair Kits:
Repair Kits are available to permit user in-plant maintenance without delay and expense of returning parts to the factory. Each kit includes installation instructions. Nameplate data of the cylinder must accompany order to insure receipt of correct parts.
The following is included in the repair kits:
Spring Return Diaphragm Kit
1. Diaphragm, Cap
2. Adhesive, Cap
3. Nuts, Cap Retainer
4. Instructions
Spring Return Bearing Kit
1. Inner Bearing
2. Outer Bearing
3. Rod Wiper
4. Instructions

Breather Vents:
Breather vents are available for use on Bellofram Spring Return Air Cylinders.
The Breather, which contains a 40 micron bronze filter, is simply threaded into the air relief port of the cylinder head. It prevents foreign matter from being drawn into the cylinder on the return stroke of the piston, and also acts as a snubber. The snubbing reduces the piston speed and impact at the end of the stroke in both directions.
Ordering Data:
Breather Vent for 1/4" pipe tap
(Fits cylinder sizes 4, 6, 9)
Part No. 661-000-001
Breather Vent for 3/8" pipe tap
(Fits cylinder sizes 12, 16, 24, 30, 36)
Part No. 661-000-002

Product Contact:

Technical Contact

Specifications:

Plant Air	Up to 145 psig (10 BAR)
Temperature Range	-40º to 225º F (-40º to 107º C)
Materials of Construction	Body: Sizes 4 and 6 are impact-extruded aluminum shell. Larger sizes are made from a steel shell. Diaphragm: Neoprene® elastomer reinforced with Flex-Weave Dacron® fabric. Rods: Ground, polished and hard-chrome plated steel. Bearings: Sintered bronze, molybdenum disulphite impregnated. Other components are high strength materials with suitable corrosion resistant treatment.
Testing	All cylinders are leak-tested prior to shipment. However, the cylinder is not a bubble tight assembly
External stroke limiters should be provided by the customer to limit the stroke in both directions on both single-acting and double-acting cylinders. Installation and operation procedures furnished with each cylinder should be followed for maximum service life.

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