Lin Engineering
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8618 SeriesHybrid Stepper Motor

  • NEMA 34 (3.390 in) Frame Size
  • 1.8° Step Angle
  • 2.5 to 5.07 in Length
  • 252.07 to 699.56 oz-in Holding Torque


Model #NEMA sizeFrame sizeStep AngleConnection TypeLength, inCurrent AMPHolding Torque, oz-inResistanceInertia, oz-in²Weight, lbs# of LeadsAvailability
8618S-01P343.390 in1.8°Parallel2.500 in8.54 AMP252.07 oz-in0.13.1 oz-in²3.20 lbs4quote
8618S-01S343.390 in1.8°Serial2.500 in4.27 AMP252.07 oz-in0.43.1 oz-in²3.20 lbs4quote
8618M-02P343.390 in1.8°Parallel3.740 in5.6 AMP489.98 oz-in0.46.02 oz-in²5.65 lbs4quote
8618M-02S343.390 in1.8°Serial3.740 in2.8 AMP489.98 oz-in1.56.02 oz-in²5.65 lbs4quote
8618L-03S343.390 in1.8°Serial5.070 in4.69 AMP699.56 oz-in0.99.85 oz-in²8.00 lbs4quote
8618L-03P343.390 in1.8°Parallel5.070 in9.38 AMP699.56 oz-in0.29.85 oz-in²8.00 lbs4quote

Torque Curves


  • 8618S-01S
  • 8618M-02S
  • 8618L-03S


ModelDIM. A (length) in
8618S-01P2.500 in
8618S-01S2.500 in
8618M-02P3.740 in
8618M-02S3.740 in
8618L-03S5.070 in
8618L-03P5.070 in

Operating Specifications

Radial Play0.001 in @ 1.00 lbs
End Play0.003 in @ 3.00 lbs
Shaft Run Out0.002 TIR
Concentricity of Mounting Pilot to Shaft0.003 TIR
Perpendicularity of Mounting Pilot to Face0.003 TIR
Max Radial Load at Dimension "K" from mounting face24.00 lbs
Dimension "K"0.800 in
Max Axial Load22.00 lbs
Maximum Case Temperature176 °F maximum
Ambient Temperature-4 ° to 122 °F
Storage Temperature-4 ° to 212 °F
Humidity Range (%) 85% or less, non-condensing
Magnet Wire InsulationClass B 130 deg C
Insulation Resistance100M Ohm at 500 VDC
Dielectric Strength900 VAC for 1 minute


Lin Engineering Catalog 2020 (PDF)
Motor Numbering System (PDF)

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