TORSIONAL COUPLINGS LM TORSIONAL COUPLING DIMENSIONS Standard Types 39 Coupling Size SAE J620 Dimensions (mm) Weight (kg) Order Code A C* d1 (bore) d3 DB E L L1 N1 Min Max 240 SB1 8 46 75 ± 9 15 50 262 50 27 75 60 73 6.1 LM - 240 - SB1 - ** - 8 10 46 75 ± 9 15 50 225 50 27 75 60 73 6.5 LM - 240 - SB1 - ** - 10 400 SB1 10 45 75 ± 7 20 60 313 61 25 80 65 90 8.6 LM - 400 - SB1 - ** - 10 800 SB1 10 50 82 ± 2 20 70 316 71 18 84 66 107 11.1 LM - 800 - SB1 - ** - 10 11½ 39 71 ± 3 20 70 351 71 18 84 66 107 10.1 LM - 800 - SB1 - ** - 11 14 46 74 ± 6 20 70 318 71 18 84 66 107 11.5 LM - 800 - SB1 - ** - 14 1200 SB1 11½ 39 65 ± 4 20 70 351 71 18 84 66 107 14.5 LM - 1200 - SB1 - ** - 11L 14 46 74 ± 6 20 70 351 71 18 84 66 107 16.4 LM - 1200 - SB1 - ** - 14 1600 SB1 14 61 97 ± 11 30 105 465 106 26 106 85 150 22.5 LM - 1600 - SB1 - ** - 14 16 61 97 ± 11 30 105 417 106 26 106 85 150 23.8 LM - 1600 - SB1 - ** - 16 18 61 97 ± 11 30 105 417 106 26 106 85 150 25.3 LM - 1600 - SB1 - ** - 18 2400 SB1 14 61 97 ± 6 30 105 465 106 26 106 85 150 31.1 LM - 2400 - SB1 - ** - 14 16 61 97 ± 6 30 105 417 106 26 106 85 150 32.4 LM - 2400 - SB1 - ** - 16 18 61 97 ± 6 30 105 417 106 26 106 85 150 33.9 LM - 2400 - SB1 - ** - 18 2800 SCA1 14 61 93 ± 4 35 110 465 - 34 - 105 162 31.5 LM - 2800 - SCA1 - ** - 14 14 61 135 ±4 35 110 465 - 76 131 105 162 31.5 LM - 2800 - SCB1 - ** - 14 16 61 93 ± 4 35 110 417 - 34 - 105 162 32.8 LM - 2800 - SCA1 - ** - 16 16 61 135 ±4 35 110 417 - 76 131 105 162 32.8 LM - 2800 - SCB1 - ** - 16 18 61 93 ± 4 35 110 417 - 34 - 105 162 34.3 LM - 2800 - SCA1 - ** - 18 18 61 135 ±4 35 110 417 - 76 126 105 162 34.3 LM - 2800 - SCB1 - ** - 18 3500 SCA1 14 70 100 ± 8 35 110 465 - 25 - 105 162 33.9 LM - 3500 - SCA1 - ** - 14 14 70 135 ± 8 6 110 465 - 60 140 105 162 33.9 LM - 3500 - SCB1 - ** - 14 16 70 100 ± 8 35 110 465 - 25 - 105 162 36.6 LM - 3500 - SCA1 - ** - 16 16 70 135 ± 8 35 110 465 - 60 140 105 162 36.6 LM - 3500 - SCB1 - ** - 16 18 70 100 ± 8 35 110 465 - 25 - 105 162 38.5 LM - 3500 - SCA1 - ** - 18 18 70 135 ± 8 35 110 465 - 60 140 105 162 38.5 LM - 3500 - SCB1 - ** - 18 * The LM coupling is very adaptable with regard to axial length. The rubber element can be positioned closer to or further from the flywheel within the limits shown for this dimension, while maintaining full engagement with the outer drive ring. Hub length L1 is adjustable as well with corresponding changes to mounting length dimension C. ** Indicate Shore hardness for rubber element here. SAE Flywheel Dimensions (SAE J620) SAE Size DA (mm) DT (mm) Through holes Number Z Size S (mm) 6-½ 215.9 200.0 6 x 6° 9 7-½ 241.3 222.3 8 x 45° 9 8 263.5 244.5 6 x 60° 11 10 314.3 295.3 8 x 45° 11 11-½ 352.4 333.4 8 x 45° 11 14 466.7 438.2 8 x 45° 13 16 517.5 489.0 8 x 45° 13 18 571.5 542.9 6 x 60° 17 21 673.1 641.4 12 x 30° 17 24 733.4 692.2 12 x 30° 19 SAE Pump Splines (SAE J744) SAE Code Number of Teeth Spline Pitch Major Ø (mm) A-A 9 20/40 12.7 A 9 16/32 15.9 B 13 16/32 22.2 B-B 15 16/32 25.4 C 14 12/24 31.8 C-C 17 12/24 38.1 D 13 8/16 44.5 E 13 8/16 44.5 F 15 8/16 50.8 #DriveLineHarmony www.jbj.co.uk/torsional-couplings.html
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