S Series Helical Worm Gear Box
High Torque · Low Noise · 100% Load Tested

Product Overview
S Series helical worm gear box, one of our K/F/R/S modular gear units. It adopts combined transmission of front helical gear and worm & worm wheel. The housing is high-strength cast iron, and gears are carburized, quenched and precision ground.
It features compact structure, 90° right-angle output and good self-locking property. With low noise and versatile mounting options, it covers a wide range of gear ratios, delivers stable load capacity and easy maintenance. Widely applied in conveyor, packaging machinery, food equipment and automation lines.




Type Selection
| K…Y…
Foot-mounted helical-bevel gear units with solid shaft |
KAB…Y…
Foot-mounted helical-bevel units with hollow shaft |
KA…Y…
Helical-bevel gear units with hollow shaft |
| KF…Y…
Flange-mounted helical-bevel gear units with solid shaft |
KAF…Y…
Flange-mounted helical-bevel gear units with hollow shaft |
KAT…Y…
Torque-arm-mounted helical-bevel gear units with hollow shaft |
| K(KF,KA,KAF,KAB,KAZ)S…
Shaft input helical-bevel gear units |
KA(K,KF,KAF,KAB,KAZ)…RF…Y…
Combinational helical-bevel gear units |
KA(K,KF,KAF,KAB,KAZ) S…RF…
Shaft input combinational helical-bevel gear units |
Key Advantage
Technical Specifications
- Power: 0.18-22KW
- Ratio: 10.27-230.48
- Input Speed: 1450RPM, 960RPM, 710RPM
- Output Speed: 0.1-270Rpm
- Torque: Up to 4000N.m
- Mounting Type: Foot-mounted / Flange-mounted / Shaft-mounted
- Output Shaft Type: Hollow shaft / Solid shaft
- Gear Material: 20CrMnTi
- Gear Hardness: Surface hardness: HRC58~62 Core hardness: HRC33~40
- Gear Precision: DIN 6 or ISO 6
- Output Shaft Material: 40Cr
- Housing Material: Cast iron HT200 or HT250
- Bearing Brand: C&U, HRB, LYC, ZWZ
- Oil Seal Brand: NAK
- Noise: 65-75dB
Input power and maximum torque
| Size | 37 | 47 | 57 | 67 | 77 | 87 | 97 | |||||
| Structure | S… SA… SF… SAF… SAT… SAZ… | |||||||||||
| Input power (kw) | 0.18-0.75 | 0.18-1.5 | 0.18-3 | 0.25-5.5 | 0.55-7.5 | 0.75-15 | 1.5-22 | |||||
| Ratio | 10.27-152 | 11.46-244.74 | 10.78-196.21 | 11.5-227.20 | 9.96-241.09 | 11.83-222 | 12.75-230.48 | |||||
| Maximum torque (N.m) | 90 | 170 | 295 | 520 | 1270 | 2280 | 4000 | |||||
Commercial Information
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