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    21 Products

    Speed Reducers for Position- and Speed-Control Motors

    Pair these speed reducers with stepper and servo motors in position- and speed-control applications. Helical gears provide exact positioning and smoother travel than our other speed reducers. Attach to a motor to transmit motion parallel to the motor shaft while reducing speed and increasing torque.
    With 1 Output Shaft
    Image of Product. Front orientation. Gear Boxes. Speed Reducers for Position- and Speed-Control Motors.
    IP65 Enclosure Rating—They meet IP65 for protection from washdowns.
    Radial Load Capacity—Radial loads are loads that are perpendicular to the shaft. They’re commonly caused by components attached to shaft, such as pulleys and sprockets.
    Max.
    Output
    Max.
    Input
    Output
    Shaft
    Overall
    Torque
    Speed,
    rpm
    Speed,
    rpm
    Power,
    hp
    For Input
    Shaft Dia.
    Dia.
    Lg.
    Lg.
    Wd.
    Ht.
    Radial Load
    Cap., lb.
    Enclosure
    Rating
    Each
    For NEMA 23 Motor Frames
     
    3:1 Speed Ratio
    240 in·lbf @ 1,750 rpm2,0006,0002.891/4"0.38"1"4 1/2"2 1/2"2 1/2"348IP65
    		00000000000000000
     
    5:1 Speed Ratio
    345 in·lbf @ 1,750 rpm1,2006,0003.241/4"0.38"1"4 1/2"2 1/2"2 1/2"348IP65
    		0000000000000000
     
    10:1 Speed Ratio
    265 in·lbf @ 1,750 rpm6006,0001.451/4"0.38"1"4 1/2"2 1/2"2 1/2"348IP65
    		0000000000000000
     
    20:1 Speed Ratio
    345 in·lbf @ 1,750 rpm3006,0001.081/4"0.38"1"5 3/4"2 1/2"2 1/2"348IP65
    		0000000000000000
     
    50:1 Speed Ratio
    345 in·lbf @ 1,750 rpm1206,0000.461/4"0.38"1"5 3/4"2 1/2"2 1/2"348IP65
    		0000000000000000
     
    For NEMA 34 Motor Frames
     
    3:1 Speed Ratio
    743 in·lbf @ 1,750 rpm1,8335,5006.751/2"1/2"1.25"5 1/4"3 1/2"3 1/2"630IP65
    		0000000000000000
     
    5:1 Speed Ratio
    867 in·lbf @ 1,750 rpm1,1005,5005.731/2"1/2"1.25"5 1/4"3 1/2"3 1/2"630IP65
    		0000000000000000
     
    10:1 Speed Ratio
    797 in·lbf @ 1,750 rpm5505,5003.041/2"1/2"1.25"5 1/4"3 1/2"3 1/2"630IP65
    		0000000000000000
     
    20:1 Speed Ratio
    867 in·lbf @ 1,750 rpm2755,5001.971/2"1/2"1.25"7"3 1/2"3 1/2"630IP65
    		0000000000000000
     
    50:1 Speed Ratio
    867 in·lbf @ 1,750 rpm1105,5000.871/2"1/2"1.25"7"3 1/2"3 1/2"630IP65
    		0000000000000000
     

    Speed Reducers for Face-Mount AC Motors

    Mount these speed reducers to a NEMA motor. They transmit motion parallel to the motor shaft while reducing speed and increasing torque. Spur gears minimize torque loss between your motor and drive shaft, making these speed reducers more efficient than our other speed reducers. All require lubrication (not included).
    With 1 Output Shaft
    Image of Product. Front orientation. Gear Boxes. Speed Reducers for Face-Mount AC Motors.
    Image of Attribute. Side1 orientation. Contains Annotated. Speed Reducers for Face-Mount AC Motors.
    Radial Load Capacity—Radial loads are loads that are perpendicular to the shaft. They’re commonly caused by components attached to shaft, such as pulleys and sprockets.
    Max.
    Output
    Max.
    Input
    Output
    Shaft
    Overall
    Torque
    Speed,
    rpm
    Speed,
    rpm
    Power,
    hp
    For Input
    Shaft Dia.
    Dia.
    Lg.
    Shaft Ctr.-to-Ctr.
    Distance
    Lg.
    Wd.
    Ht.
    Radial Load
    Cap., lb.
    Each
    For NEMA 56C Motor Frames
     
    2.6:1 Speed Ratio
    136 in·lbf @ 1,750 rpm6651,7501.485/8"7/8"2.47"1.19"7"8 1/4"6 3/4"Not Rated0000000000000
     
    3.2:1 Speed Ratio
    167 in·lbf @ 1,750 rpm5471,7501.485/8"7/8"2.47"1.19"7"8 1/4"6 3/4"2560000000000000
     
    3.9:1 Speed Ratio
    204 in·lbf @ 1,750 rpm4481,7501.485/8"7/8"2.47"1.19"7"8 1/4"6 3/4"2530000000000000
     
    4.8:1 Speed Ratio
    249 in·lbf @ 1,750 rpm3641,7501.485/8"7/8"2.47"1.19"7"8 1/4"6 3/4"2490000000000000
     
    5.6:1 Speed Ratio
    290 in·lbf @ 1,750 rpm3151,7501.485/8"7/8"2.47"1.19"7"8 1/4"6 3/4"2460000000000000
     
    6.5:1 Speed Ratio
    286 in·lbf @ 1,750 rpm2701,7501.255/8"7/8"2.47"1.19"7"8 1/4"6 3/4"Not Rated00000000000000
     
    7.6:1 Speed Ratio
    288 in·lbf @ 1,750 rpm2291,7501.075/8"7/8"2.47"1.19"7"8 1/4"6 3/4"2370000000000000
     
    9.1:1 Speed Ratio
    289 in·lbf @ 1,750 rpm1921,7500.95/8"7/8"2.47"1.19"7"8 1/4"6 3/4"Not Rated00000000000000
     
    10.1:1 Speed Ratio
    182 in·lbf @ 1,750 rpm1721,7500.55/8"5/8"2.03"—7 3/4"8 1/4"6 3/4"Not Rated00000000000000
     
    11.1:1 Speed Ratio
    293 in·lbf @ 1,750 rpm1581,7500.755/8"7/8"2.47"1.19"7"8 1/4"6 3/4"2420000000000000
     
    Oil
    Each
    1 qt. Lubricant000000000000
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