Pneumatic And Hydraulic Equipment Page 319

Determining Mounting Class Mounting Style Rod End Connection Class 1 Class 2 Class 3 Class 4 Side Lug End Lug Flange Side Lug End Lug Flange Pivot Clevis Side Lug End Lug Flange Rigidly guided, pivoted Pivoted, supported but not rigidly guided Pivoted, supported Free end unguided and unsupported Dual Piston Stop Length Calculation Select mounting class. Move over to the column showing a stroke length equal to or less than required. Figure at top of column is required Dual Piston stop length. Examples: Class 2, 62" stroke length = 2" stop length. Class 3, 62" - 5" stop length. All lengths shown here are in inches. Column Strength Limitations Select mounting class, rod diameter, and stroke length in inches: read maximum push force in pounds for that combination. Where no value is shown, the rod is safe for the maximum rated cylinder push force. Mounting Class Dual Piston - Stop Length Required 1 2 3 4 5 6 7 8 9 10 11 12 1 64 88 1.10 130 2 46 62 78 93 108 122 136 3 25 34 43 51 59 67 74 81 88 95 101 108 4 16 22 28 40 46 51 56 61 66 70 74 Net (effective) stroke stop length = Gross stroke of cylinder. Mounting dimensions are determined from gross stroke. Consult your local distributor for Dual Piston Pricing. Weights Approximate Weights (lbs.) Bore Base Weight Adder per inch of stroke 1-1/2" (17) 1.36 0.19 2" (31) 1.81 0.22 2-1/2" (50) 2.9 0.31 3-1/4" (83) 5.62 0.51 4" (125) 7.5 0.57 Rod Diameter/ Inches Stroke Class 1 Class 2 Class 3 Class 4 5/8" 1" 5/8" 1" 5/8" 1" 5/8" 1" 10 820 15 820 360 2390 20 460 200 1340 25 290 1940 130 860 30 820 200 1340 90 600 40 820 460 110 750 50 330 50 540 290 1940 70 480 30 210 60 360 2390 200 1340 50 330 20 150 DOUBLE-WALL CYLINDERS Double-Wall Long Stroke Cylinder Selection Application of LONG STROKE CYLINDERS are controlled by two factors: column strength of piston rod and mounting configuration. Dual Piston construction provides needed additional bearing surface through the cycle of the cylinder. Dual Pistons consist of mounting two pistons on the rod, separated a calculated distance to provide the required stop length. Available in one inch increments, required stop lengths are determined from mounting class and stroke information. B I M B A Bimba JHF Catalog [ Volume 7 ] (314) 427-0600 800-444-0522 (FAX) 314-427-3502 www. j hf.com 319 Prices Subject to Change Without Notice John Henry Foster pneumatic and hydraulic equipment

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