NFPA Air Cylinders

Page 10 Specifications subject to change without notice or incurring obligations. 10-17-12 Options • Option -E consists of a magnet bonded into the piston head. When the piston magnet moves past an external sensor, the magnetic field activates the sensor without physi- cal contact. • Reliability – The annular piston magnet is permanently bonded into a groove in the piston. It is a polar- ized permanent magnet of rubber bonded barium ferrite that is very stable and is not affected by shock. Under normal usage it will remain magnetized indefinitely. • Warning – External magnetic fields and/or ferrous objects may Magnetic Piston: Option -E Male Rod Thread Stud : Option -MR affect the strength of the piston magnet therefore affecting sensor actuation and piston position indication. Labels noting this are affixed to the cylinder. • Mounting – The sensor is attached to a 2-part clamp that attaches rigidly to a tie rod and can be positioned anywhere along the length of the cylinder for very precise signaling. • Two sensor styles are used – (a) the 9-2A197 Series for 1-1/ 2" thru 4" bores requires a tie rod clamp, and (b) the 749 Series which accommodates the larger diameter tie rods of the 5" and 6" bores with an integral clamp. Order Sensors, Sensor Clamps and Cables Separately. See page 13 for details. A high strength stud is threaded into the female rod end and retained with thread locking adhesive. This method eliminates the small diameter thread relief normally required when machining male threads. It provides a much stronger rod end which can be repaired, rather than replacing the complete rod, should the stud become damaged. $ 6WXG /HQJWK .. 7KUHDG 5RG /RFWLWH Š 1R 5HOLHI 1R :HDNQHVV $ Rubber Bumpers Options : Head -BF ‡ , Cap -BR , Head & Cap -BB A donut or pad of rubber is bonded in place to act as the piston stop and absorb the impact of the piston. This reduces noise and absorbs energy. Cylinder length will increase .062" per bumper so that the piston will travel a minimum of specified stroke. • Operating Temperature: –20° to 220°F. ‡ Note: –BF not available 1- 1 / 2 " bore with oversize rod. –BF not available 1- 1 / 2 " bore with adjustable air cushion. –BF not available 2" bore with adjustable air cushion & oversize rod. Silent Seal Bumpers : Option -SB Attached to the piston, these bumpers reduce the noise caused by the impact of the piston against the end cap. Standard adjustable air cushions may be used in conjunction with these silent seal bumpers to further reduce end of stroke noise and impact while giving deceleration benefits. • Available 1-1/2" thru 5" bores only. • Operating Temperature: –20° to 200°F. • Operating Pressure to 150 psi. Bore 1 1 / 2 " 2" 2 1 / 2 " 3 1 / 4 " 4" 5" 0 psi .106 .090 .201 .160 .150 .219 Static Stroke Length Reduction (inches) 20 psi .056 .070 .166 .102 .085 .158 40 psi .028 .046 .122 .082 .065 .099 60 psi .018 .037 .071 .048 .031 .053 80 psi 0 .018 .008 .038 .005 .015 100 psi 0 0 0 0 0 0 Part No. NMR - 7 / 16 -20 NMR - 3 / 4 -16 NMR - 1-14 NMR - 1 1 / 4 -12 KK 7 / 16 -20 3 / 4 -16 1-14 1 1 / 4 -12 A 0.75 1.13 1.63 2.00 2A 1.50 2.25 3.25 4.00 Also available separately for individual installation. Available only with Style #3 or #8 Rod End.

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