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Marsh Bellofram PCD Division Diaphragm Air Cylinders

Marsh Bellofram PCD Division Diaphragm Air Cylinders
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Marsh Bellofram PCD Division Diaphragm Air Cylinders

Product catalog summary
Overview
Marsh Bellofram provides diaphragm air cylinders suitable for industrial applications, known for their low start-up pressure, low breakaway force, and sensitive response, ideal for smooth operations across various temperatures.
Features
  • Low start-up pressure and breakaway force
  • Highly sensitive response
  • Operates across a wide temperature range
  • Minimal friction with no edge seals to replace
  • No blow-by leakage
  • Available in numerous varieties
  • Cost-effective
Description
These actuators, made from elastomers, metals, and fabrics, are frictionless and economical, requiring no lubrication. They are used for lifting, clamping, and pushing, featuring a rolling diaphragm design that ensures low friction, minimal leakage, and adaptability to temperature variations.
Applications
  • Expansion Chambers
  • Accumulators
  • Pumps
  • Reservoirs
  • Shock Mounts
  • Impact Absorbers
  • Weld Drivers
  • Tensioners
  • Dancer Rolls
  • Valve Actuation
  • Louver Controls
Standard Cylinders
Available in eight sizes, these cylinders come in spring-return and double-acting types with various stroke options, featuring aluminum or steel shells, chrome-plated rods, and bronze bearings, with multiple mounting options.
Super Cylinders
Designed for maximum sensitivity, these spring-return cylinders feature linear ball bearings and hardened steel rods, available with Series F stroke variations.
Specifications
  • Plant Air: Up to 145 PSIG (10 BAR)
  • Temperature Range: -40˚ to 225˚F (-40˚ to 107˚C)
  • Materials: Aluminum or steel shells, neoprene diaphragms, chrome-plated rods, and bronze bearings
Small Bore Cylinders
These offer diaphragm cylinder performance in a smaller size, available only in spring-return varieties with flush or extended rod options.
Ordering Information
Standard and Super Cylinders can be customized by type, size, series, rod, and mounting. Repair kits are available for maintenance.
Testing and Maintenance
All cylinders undergo leak testing before shipment. Customers should provide external stroke limiters and follow installation and operation procedures for optimal service life.
See more

Catalog excerpts

Marsh Bellofram PCD Division Diaphragm Air Cylinders-1

www.marshbellofram.com • 800.727.5646 45 Air Cylinders Diaphragm Air Cylinders Small bore Cylinders Standard Cylinders Super Cylinders

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Marsh Bellofram PCD Division Diaphragm Air Cylinders-2

46 800.727.5646 • www.marshbellofram.com Air Cylinders Features • Low start up pressure • Low breakaway force • Extremely sensitive response • Very smooth, “non-jarring” action • Wide temperature range • Very low friction • No edge seals to replace • No blow-by leakage • Numerous varieties • Low total cost Description 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...

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Marsh Bellofram PCD Division Diaphragm Air Cylinders-3

www.marshbellofram.com • 800.727.5646 47 Air Cylinders Small Bore Cylinders Bellofram’s 0.38 and 1.7 sq. inch effective area diaphragm cylinders combine the performance of the diaphragm cylinder with small size. Two different stroke options are available in each size, with either flush or extended rods on 0.38 sq. inch cylinders. Only spring return varieties are available. Specifications 0.38 sq. inch Cylinders have aluminum alloy shells and end caps, and carbon steel rods. 1.7 sq. inch Cylinders have die-cast aluminum shells and end caps, and chrome-plated carbon steel rods. All varieties have...

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Marsh Bellofram PCD Division Diaphragm Air Cylinders-4

48 800.727.5646 • www.marshbellofram.com Air Cylinders Cylinder Replacement Parts When ordering replacement parts, provide nomenclature of part from photographs in addition to the following information from the nameplate on the cylinder: Type, Size, Series, and Rod type. Complete kits are available for replacement of diaphragm or bearings. Double Acting Cylinders Outer Rod Bearing Inner Rod Bearing Rod Wiper Cap Diaphragm Spring Return Cylinders (Super Cylinder Shown) Rod End Cap Diaphragm Retainer Mounting Stud Rod Retaining Screw Piston Spring Head Retaining Screw Linear Ball Bearing (Bronze...

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Marsh Bellofram PCD Division Diaphragm Air Cylinders-5

www.marshbellofram.com • 800.727.5646 49 Air Cylinders Standard Cylinders Ordering Information Type S Spring Return D Double Acting Size 04 4 Square Inches 06 6 Square Inches 09 9 Square Inches 12 12 Square Inches 16 16 Square Inches 24 24 Square Inches 30 30 Square Inches 36 36 Square Inches Series E Determines Stroke F Make a selection from Operating Data Table on pg. 47 Rod BP Bellofram Product Standard SM National Fluid Power Assoc. Standard Make a selection from dimensional data tables on pgs. 51-54 Mounting N Nose Mount UM Universal Mount FM Foot Mount CFM Cap Flange Mount HFM Head Flange...

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Marsh Bellofram PCD Division Diaphragm Air Cylinders-6

50 800.727.5646 • www.marshbellofram.com Air Cylinders Note: Sizes 4, 6, 9, and 12 have 4 Head Retaining Screws. All other sizes have 8 Head Retaining Screws - Location varies depending on cylinder size. Engineering data available on request Universal Mount Cap Flange Mount Note: Sizes 4, 6, 9, and 12 have 4 Head Retaining Screws. All other sizes have 8 Head Retaining Screws - Location varies depending on cylinder size. Engineering data available on request Head Flange Mount *EW = External width of clevis bracket stud. Clevis Bracket Mount (or Stud) Note: Sizes 4, 6, 9, and 12 have 4 Head Retaining...

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Marsh Bellofram PCD Division Diaphragm Air Cylinders-10

54 800.727.5646 • www.marshbellofram.com Air Cylinders Small Bore Cylinder Small Bore Cylind er Dimensions - Inches Part Number A B C D E F G H I J K Part Number A B C D 980-008-000 2-2932 1364 58 1916 1316 34 34 38 2 2-18 516 980-013-000 2.81 0.438 1516 78 980-034-000 980-077-000 3-2132 1364 58 1916 1316 34 34 38 2 2-18 516 980-014-000 1.95 0.244 1516 78 980-035-000 Small Bore Cylind er Dimensions - Millimeters Part Number A B C D E F G H I J K Part Number A B C D 980-008-000 73.8 5.2 15.9 39.6 20.6 19.1 19.1 9.5 50.8 54.0 7.9 980-013-000 71.4 11.1 23.8 22.2 980-034-000 980-077-000 92.9 5.2...

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.