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50
F-PLUS
EXPANDED
RANGES
HOW TO SPECIFY
Model Bore Sizes Maximum Stroke
SF (Standard Seals) 9/16" and 3/4" 9"
SF (Standard Seals) 1-1/16" thru 4" 15"
SF (Low Friction Seals) 9/16" and 3/4" 9"
SF (Low Friction Seals) 1-1/16" thru 4" 15"
SFD All bore sizes 16"
SFR All bore sizes 4"
SFC 9/16"–2-1/2" 4"
SFC 3" and 4" 3"
Approximate Cylinder Weights (lbs)
BORE
SF SFD SFR/SFC
0" Stroke
Adder Per 1/8"
Of Stroke
0" Stroke
Adder Per 1/8"
Of Stroke
0" Stroke
(Up To 1")
1" Stroke
(Up To 2")
2" Stroke
(Up To 3")
3" Stroke (Up
To 4")
Adder Per
1/8" Of Stroke
9/16" (056) 0.15 0.01 0.17 0.01 0.20 0.36 0.52 0.68 0.01
3/4" (075) 0.27 0.02 0.31 0.02 0.34 0.56 0.78 1.00 0.02
1-1/16" (106) 0.70 0.03 0.76 0.03 0.78 1.14 1.47 1.85 0.02
1-1/2" (150) 1.20 0.04 1.35 0.05 1.34 1.88 2.43 2.97 0.03
2" (200) 1.63 0.05 1.82 0.06 1.81 2.45 3.02 3.72 0.04
2-1/2" (250) 3.13 0.05 3.44 0.07 3.42 4.58 5.63 6.79 0.04
3" (300) 3.97 0.07 4.35 0.09 4.35 5.58 7.00 8.19 0.05
4" (400) 6.20 0.09 8.17 0.12 8.49 9.96 11.63 13.08 0.07
Cylinder Weights
Bore Size
9/16" (056) 3/4" (075) 1-1/16" (106) 1-1/2" (150) 2" (200) 2-1/2" (250) 3" (300) 4" (400)
Length adder (in) 0.25 0.25 0.38 0.38 0.38 0.38 0.50 0.50
Length Adders for Low Friction Seals
Maximum Stroke + Extra Extension Lengths
Enclosed Spring Forces
Bore
Maximum Force
(Lb)
Spring Rates (Lb/In)
0.12 To 1"
Stroke (Lb/In)
1.001 To 2"
Stroke (Lb/In)
2.001 To 3"
Stroke (Lb/In)
3.001 To 4"
Stroke (Lb/In)
9/16" (056) 5.90 4.00 1.75 1.24 0.88
3/4" (075) 10.40 6.00 2.70 1.86 1.35
1-1/16" (106) 10.80 6.50 2.70 1.91 1.35
1-1/2" (150) 12.90 6.00 2.30 1.66 1.15
2" (200) 17.50 11.00 2.60 2.10 1.30
2-1/2" (250) 26.00 9.50 5.00 3.28 2.50
3" (300) 35.00 16.00 5.00 3.81 2.50
4" (400) 50.00 22.00 5.50 4.40 2.75
Stainless Steel Flat-1
®
Specifications
2
