S Series Specifications

The S series covers power ratings of 0.12–22 kW, torque ratings of 10–4,890 N·m and output speeds of 0.12–397 rpm. Standard gear ratios range from 10.27 to 230.48; combinations with the R series can reach 8,608 or higher. Configuration options include solid-shaft output (S), shaft mounting (SA), flange mounting (SF/SAF) and shaft input (SS).

S Series Model Reference

Model	Gear ratio range	Power range (kW)	Permissible torque (N·m)
S37	10.27–165.71	0.18–0.75	90
S47	11.46–244.74	0.18–1.5	170
S57	10.78–196.21	0.18–3	300
S67	11.55–227.20	0.25–5.5	520
S77	9.96–241.09	0.55–7.5	1270
S87	11.83–223.26	0.75–15	2280
S97	12.75–230.48	1.5–22	4000

Applications Where Self-Locking Matters

Resistance to back-driving can be useful in lifting equipment, inclined conveyors where reverse movement must be controlled, and other process machinery. At suitable ratios, the S series worm stage may provide static self-locking. For suspended loads, this characteristic must not be treated as a substitute for the complete machine’s braking and safety functions.

Balancing Gear Ratio and Efficiency

S series ratio selection requires a balance between speed reduction, self-locking behaviour and transmission efficiency. Higher ratios can favour self-locking but typically have lower efficiency. Applications that do not require self-locking may use a more efficient ratio configuration. SANYOO’s technical team can advise on the available options for the application.

Complete S Series Technical Information

Visit www.sanyoogear.com to download the S series catalogue or contact the technical team. Please provide the required power and output torque, input and output speeds, self-locking requirements, duty cycle and environmental conditions.