Standard SP Series Clutch SP321P Series www.jbj.co.uk/mechanical-power-conversion.html #DriveLineHarmony Dimensions are in mm (inches) The following general formula should be used for determining the actual applied load: L = Actual applied load kg (lbs) N = Shaft speed (rpm) D = Pitch diameter mm (inches) of pulley, etc. F = Load factor, 1.0 for chain or gear drive, 1.5 for timing belts, 2.5 for all V belts, 3.5 for flat belts. LF = 2.1 for reciprocating compressors and other severe shock drives and 1.8 for large inertia type drives (i.e. Crushers, chippers, planers, etc.) Compound Drives and Power Engaged Power Take-Off applications must have written factory review. SP321P 254.0 (10.00) 505.0 (19.88) 6.4 (0.25) 97.0 (3.82) 31.7 SQ. x 203.2 KEY (1.25 SQ. x 8.00) 4.750 4.749 120.65 120.63 5.118 5.117 130.00 129.98 SP321P9 RPM PTO Model 25.4 (1.0) 50.8 (2.0) 76.2 (3.0) 101.6 (4.0) 127.0 (5.0) X Distance, mm (in) – see diagram SP321P – Allowable Side Load, kg (lbs) 152.4 (6.0) 177.8 (7.0) 203.2 (8.0) 228.6 (9.0) 500 5851 (12900) 5625 (12400) 5398 (11900) 5035 (11100) 4382 (9660) 3878 (8550) 1000 4649 (10250) 4454 (9820) 4286 (9450) 4128 (9100) 3969 (8750) 3833 (8450) 3447 (7600) 3152 (6950) 2880 (6350) 1200 4423 (9750) 4241 (9350) 4082 (9000) 3924 (8650) 3787 (8350) 3651 (8050) 1500 4173 (9200) 4037 (8900) 3855 (8500) 3719 (8200) 3629 (8000) 3492 (7700) 3356 (7400) (Imperial) L = x F x LF 126,000 x HP N x D (metric) L = x F x LF 1945010 x kW N x D 34
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