S Series Bevel Gear Reducer
The S series is a compact right-angle helical-worm gear reducer designed for smooth torque transmission and low-speed industrial drive applications.
Product Overview
The S series combines a helical gear input stage with a worm gear output stage to provide speed reduction and a 90-degree drive arrangement. Its compact structure and smooth-running characteristics suit conveyors, packaging machinery, positioning mechanisms and processing equipment.
The series includes sizes S37–S97, with solid or hollow output shafts and foot, flange or torque-arm mounting configurations. Standard units cover reduction ratios from 3.97 to 288, while combined reduction configurations provide ratios up to 33,818.
Standard motor packages cover 0.12–30 kW. Extended configurations offer higher power and torque capacities, subject to the selected unit’s mechanical and thermal ratings.
Select the reducer according to output speed, torque, operating hours, starting frequency and mounting position. Worm gearing requires careful review of efficiency, heat dissipation and lubrication, particularly for continuous-duty applications.
The series includes sizes S37–S97, with solid or hollow output shafts and foot, flange or torque-arm mounting configurations. Standard units cover reduction ratios from 3.97 to 288, while combined reduction configurations provide ratios up to 33,818.
Standard motor packages cover 0.12–30 kW. Extended configurations offer higher power and torque capacities, subject to the selected unit’s mechanical and thermal ratings.
Select the reducer according to output speed, torque, operating hours, starting frequency and mounting position. Worm gearing requires careful review of efficiency, heat dissipation and lubrication, particularly for continuous-duty applications.
Electrical Specifications
| Parameter | Specification |
|---|---|
| Drive Configuration | Right-angle helical-worm gear reducer with integrated motor, motor adapter or shaft input |
| Motor Type | Three-Phase AC Induction Motor; brake, inverter-duty or servo configurations with suitable connections |
| Rated Motor Power | Standard configurations: 0.12–30 kW; extended configurations up to 45 kW, subject to mechanical and thermal capacity |
| Rated Voltage | Motor options include 220–240 V, 380–400 V, 415–440 V and 660–690 V |
| Rated Frequency | 50 Hz or 60 Hz, according to the selected motor rating |
| Motor Rated Speed | Selected according to motor pole count and frequency; output-speed figures below use 1,450 rpm input |
| Rated Current | Specified for the selected motor power, voltage, frequency and efficiency |
| Motor Efficiency Class | IE1, IE2 or IE3 motor packages, depending on configuration |
| Motor Protection Rating | IP55 motor packages available; alternative protection levels subject to selection |
| Insulation Class | Class F motor packages available |
| Operating Duty | S1 motor packages available; gearbox continuous-duty capacity requires thermal verification |
| Brake Option | Optional brake motor; braking and holding torque selected for the application |
| Inverter Operation | Suitable motor required; verify motor cooling, gearbox lubrication, thermal loading and torque limits |
Mechanical Specifications
| Parameter | Specification |
|---|---|
| Gear Type | Right-Angle Helical-Worm Gear Reducer |
| Gear Unit Size | S37, S47, S57, S67, S77, S87 and S97 |
| Output Shaft | Solid keyed shaft, keyed hollow shaft, shrink-disc hollow shaft or selected splined hollow-shaft configuration |
| Mounting Arrangement | Foot-mounted, flange-mounted or shaft-mounted with torque arm; B5/B14 flange options depend on configuration |
| Shaft / Bore Diameter | Solid output shaft diameters: 20–70 mm; hollow bore dimensions depend on size and connection type |
| Input Connection | Integrated gearmotor, IEC motor adapter, suitable servo adapter or solid input shaft |
| Net Weight | Specified for the selected gearbox size, shaft arrangement and motor package |
| Overall Dimensions | Solid output shaft extensions: 40–140 mm; housing and flange dimensions depend on configuration |
Technical Specifications
| Mechanical Specifications | Specification |
|---|---|
| Reduction Ratio | Standard units: 3.97–288; selected extended units up to 389; combined reduction configurations: 110–33,818 |
| Rated Output Torque | Standard model maximum ratings: approximately 90–4,300 Nm; selected extended configurations up to 10,200 Nm |
| Output Speed | At 1,450 rpm input: standard units approximately 5.03–365.24 rpm; ratio 389 gives 3.73 rpm; combined units approximately 0.043–13.18 rpm |
| Permissible Input Speed | Selected according to ratio, worm sliding speed, lubrication and thermal capacity; 1,450 rpm is a calculation input, not a universal limit |
| Service Factor | Selected according to load, daily operating hours, starting frequency, shock loading and thermal duty |
| Gear Stages | Typically one helical stage plus one worm stage; additional stages in combined reduction configurations |
| Permissible Shaft Loads | Radial and axial limits specified for the selected size, speed, load direction and force application point |
| Lubrication | Gear oil selected for worm gearing; oil type, viscosity and quantity matched to mounting position and operating temperature |
| Operating Temperature | Selected configurations specify −10°C to +40°C ambient; other conditions require lubricant, seal and thermal review |
| Optional Features | Brake motor, torque arm, shrink-disc connection, reduced backlash or combined reduction configuration, depending on model |
Frequently Asked Questions
Provide the required output speed, torque, motor power, operating hours, starting frequency and mounting position. Include ambient temperature, shock loads and external shaft forces.
A helical gear stage reduces input speed before driving a worm and worm wheel. This combination provides further reduction and a right-angle output arrangement.
Standard configurations cover motor powers of 0.12–30 kW and model maximum torque ratings up to approximately 4,300 Nm. Selected extended configurations reach 45 kW and 10,200 Nm, subject to the exact unit’s ratings.
Standard ratios range from 3.97 to 288. Selected extended units reach 389, while combined reduction configurations cover 110–33,818. Available ratios depend on size and configuration.
No. Back-driving characteristics depend on worm geometry, efficiency, lubrication and operating conditions. Do not assume that the reducer can hold a load without a brake.