• JAC SMM Mill Motor Gear Coupling (SMM 125-355)
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JAC SMM Mill Motor Gear Coupling (SMM 125-355)

JAC SMM Mill Motor Gear Coupling (SMM 125-355)

Gear coupling for mill-duty motors, with one hub bored to suit the tapered motor shaft. Other dimensions match the standard SSM/SEM/GD/GS sizes.

Key features

  • Hub for tapered mill motor shaft
  • Crowned teeth absorb shaft misalignment
  • Detail dimensions as standard SSM, SEM, GD and GS sizes
  • Variants (a) and (b) for sizes 125, 280 and 315
  • Grease lubricated

Specifications

Series SMM 125 to SMM 355
Length E 157 - 491 mm
GD2 0.038 - 7.79 kg-m2
Application Mill and crane duty motors
Lubrication Grease
Unit mm
Source JAC Couplings Gear Coupling catalogue - Mill Motor Type
SMM 125(a) Length E: 157 mm | Hub l1 / l2: 50 / 75 mm | GD2: 0.038 kg-m2
SMM 125(b) Length E: 172 mm | Hub l1 / l2: 50 / 90 mm | GD2: 0.039 kg-m2
SMM 140 Length E: 185 mm | Hub l1 / l2: 63 / 90 mm | GD2: 0.066 kg-m2
SMM 160 Length E: 220 mm | Hub l1 / l2: 80 / 100 mm | GD2: 0.123 kg-m2
SMM 180 Length E: 246 mm | Hub l1 / l2: 90 / 115 mm | GD2: 0.208 kg-m2
SMM 200 Length E: 260 mm | Hub l1 / l2: 100 / 115 mm | GD2: 0.336 kg-m2
SMM 224 Length E: 289 mm | Hub l1 / l2: 112 / 125 mm | GD2: 0.637 kg-m2
SMM 250 Length E: 305 mm | Hub l1 / l2: 125 / 125 mm | GD2: 1.09 kg-m2
SMM 280(a) Length E: 339 mm | Hub l1 / l2: 140 / 140 mm | GD2: 2.09 kg-m2
SMM 280(b) Length E: 339 mm | Hub l1 / l2: 140 / 150 mm | GD2: 2.13 kg-m2
SMM 315(a) Length E: 386 mm | Hub l1 / l2: 160 / 170 mm | GD2: 4.27 kg-m2
SMM 315(b) Length E: 421 mm | Hub l1 / l2: 160 / 185 mm | GD2: 4.42 kg-m2
SMM 355 Length E: 491 mm | Hub l1 / l2: 180 / 235 mm | GD2: 7.79 kg-m2
Shaft CouplingJAC
13 product codes available in this family
Sourced direct from KoreaExport-ready supplyCompetitive pricing
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JAC SMM Mill Motor Gear Coupling (SMM 125-355)

Brand JAC·Shaft Coupling

Available part numbers (13)

SMM 125(a), SMM 125(b), SMM 140, SMM 160, SMM 180, SMM 200, SMM 224, SMM 250, SMM 280(a), SMM 280(b) + 3 more — see full table ↓

How to order

Send the JAC part numbers and quantities through our RFQ form or to info@prosourcemro.com. We confirm price, availability and lead time within 1 business day — no account needed.

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Product codes & specifications
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Product codeSpec
SMM 125(a)Length E: 157 mm | Hub l1 / l2: 50 / 75 mm | GD2: 0.038 kg-m2
SMM 125(b)Length E: 172 mm | Hub l1 / l2: 50 / 90 mm | GD2: 0.039 kg-m2
SMM 140Length E: 185 mm | Hub l1 / l2: 63 / 90 mm | GD2: 0.066 kg-m2
SMM 160Length E: 220 mm | Hub l1 / l2: 80 / 100 mm | GD2: 0.123 kg-m2
SMM 180Length E: 246 mm | Hub l1 / l2: 90 / 115 mm | GD2: 0.208 kg-m2
SMM 200Length E: 260 mm | Hub l1 / l2: 100 / 115 mm | GD2: 0.336 kg-m2
SMM 224Length E: 289 mm | Hub l1 / l2: 112 / 125 mm | GD2: 0.637 kg-m2
SMM 250Length E: 305 mm | Hub l1 / l2: 125 / 125 mm | GD2: 1.09 kg-m2
SMM 280(a)Length E: 339 mm | Hub l1 / l2: 140 / 140 mm | GD2: 2.09 kg-m2
SMM 280(b)Length E: 339 mm | Hub l1 / l2: 140 / 150 mm | GD2: 2.13 kg-m2
SMM 315(a)Length E: 386 mm | Hub l1 / l2: 160 / 170 mm | GD2: 4.27 kg-m2
SMM 315(b)Length E: 421 mm | Hub l1 / l2: 160 / 185 mm | GD2: 4.42 kg-m2
SMM 355Length E: 491 mm | Hub l1 / l2: 180 / 235 mm | GD2: 7.79 kg-m2

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