Reducer

Focusing on the design, manufacturing processes, heat treatment techniques, and key quality control points for all types of standard and non-standard gears.

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S Series Helical Gear Reducer

The S Series combines helical gear and worm gear transmission in a right-angle structure. It is used where installation space, output direction, and speed reduction need to be matched within the same drive system. Common applications include conveyors, material handling equipment, packaging machinery, automated production lines, and general industrial equipment.

Item	Value
Model	S37 – S100
Ratio Range	3.97 – 288.00
Motor Power	0.12 – 30 kW
Output Torque	90 – 5,000 Nm
Mounting Type	Foot Mounted / Flange Mounted
Output Shaft	Solid Shaft

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Product Description

Key Technical Features & Advantages

Helical-Worm Gear Transmission: The S series combines a helical gear stage with a worm gear stage for right-angle power transmission and higher reduction ratios.
Right-Angle Output Layout: The 90° drive arrangement suits equipment where the motor and driven shaft need to be positioned perpendicular to each other.
Solid Output Shaft: The S type is equipped with a solid output shaft for direct connection to conveyors, drive rollers, shafts, and other driven components.
Quiet Operation: The worm gear stage helps reduce running noise, making the series suitable for equipment installed in production and working environments where sound levels matter.
Compact Housing: The gear stages are arranged within a compact housing, making installation easier where available space is limited.
Wide Reduction Range: Multi-stage transmission allows the S series to cover applications requiring relatively low output speed and higher reduction ratios.
Flexible Motor Matching: Different motor frame sizes and connection arrangements can be selected according to the reducer size and equipment requirements.

Product Design Configurations

S.. Series: Foot-mounted helical-worm gear reducer with solid output shaft
SF.. Series: Flange-mounted helical-worm gear reducer
S37–S97: Standard frame sizes for general industrial drive applications
S100 / SF100: Larger frame size for higher-capacity applications

Input & Output Configurations

Output Type: Solid shaft
Input Type:
- Direct motor-mounted configuration
- Motor flange connection
- Customized motor connection for special applications

Mounting Styles & Options

Mounting Methods: Foot-mounted / Flange-mounted
S Type: Foot-mounted structure with solid output shaft
SF Type: Flange-mounted structure
Installation Options: Standard mounting interfaces with flexible motor connection arrangements

Motor Options & Accessories

Motor matching for different frame sizes
PTC thermistors and thermostat sensors
Independent cooling fans
Mechanical holding brakes
Encoders for speed and position feedback
Anti-condensation heaters
Mechanical backstops for non-reversing drives

Primary Industrial Applications

Conveyor and Material Handling Equipment
Packaging Machinery
Food Processing Equipment
Mixing and Agitation Systems
Material Feeding Equipment
Lifting and Transfer Machinery
Environmental Protection Equipment
Automated Production Lines
General Industrial Drive Systems

Our Core Strengths

Standardized Production Process Flow

Raw Material Forging & Normalizing
Premium alloy steel (20CrMnTi / 40Cr) forgings undergo strict normalizing and ultrasonic flaw detection to eliminate internal stress, optimize grain structure, and ensure superior core impact resistance.

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Precision CNC Machining & Gear Hobbing
Multi-axis CNC lathes complete high-precision turning of reference datums and end faces. High-speed CNC gear hobbing and shaping machines precisely form the initial tooth profile with strict geometric allowances.
Controlled Carburizing & Heat Treatment
Processed in multi-purpose atmosphere-controlled furnace lines. Surface carburizing and quenching achieve a wear-resistant surface hardness of HRC 58–62, while preserving tough, shock-absorbing cores.

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High-Precision CNC Gear Grinding
Advanced CNC profile gear grinding machines eliminate heat-treatment micro-distortions. Tooth flanks are precisely modified with crowning to achieve DIN Class 5–6 accuracy, ensuring whisper-quiet running.
Housing Machining & Clean Modular Assembly
Gearbox housings are machined on CNC horizontal machining centers for micron-level bore concentricity. Assembled in a clean workshop with top-tier bearings (SKF/NSK/C&U) and dual-lip oil seals to guarantee zero oil leakage.

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100% Comprehensive Testing & Export Packaging
Every unit undergoes 100% full inspection: gear measurement center (CMM), dynamic running test (vibration, noise, temperature rise) and sealing test before multi-layer anti-rust film and solid plywood case packaging.

Core Advantage

Ultra-Silent Transmission

High-precision gear grinding delivers tooth surface roughness as low as Ra 0.4, with tight meshing, low vibration and noise for smoother equipment operation.

Extended Service Life

Premium materials matched with precise heat treatment ensure wear-resistant tooth surfaces and impact-resistant core, cutting maintenance and replacement costs.

All-Condition Adaptation

Custom solutions for high-speed heavy load, corrosion resistance and food-grade scenarios, eliminating trial-and-error costs in product selection.

Cost-Effective & Reliable Delivery

Scaled production supports tiered pricing for bulk orders with consistent quality; full-process control guarantees stable lead time and complete after-sales support.

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Logistics and After-Sales Service

Global Logistics & Export Packaging

VCI Anti-Rust & Solid Plywood Packaging

Internal VCI vacuum anti-rust packaging combined with seaworthy, non-fumigation plywood crates to guarantee zero corrosion during long ocean transit.

Flexible Multi-Modal Shipping

Supporting Sea Freight, Air Cargo, and Railway Express (FOB, CIF, DDP/DDU) with real-time tracking for punctual delivery.

Complete Export Documentation

Full clearance support including Certificate of Origin (CO/Form E), CE certificates, and factory dynamic test reports.

After-Sales Service & Technical Warranty

12-Month Full Quality Warranty

100% free replacement or repair for any manufacturing-related defects under standard operating conditions within 12 months.

24/7 Rapid Engineering Support

Professional technical team provides 2-hour response for model selection, installation guidance, and troubleshooting.

Lifetime Spare Parts Availability

Sufficient inventory of standardized modular parts (gears, shafts, seals, bearings) ensuring rapid worldwide dispatch.

Frequently Asked Questions (FAQ)

Can your gearboxes directly replace international brands like SEW, Flender, or Bonfiglioli?

Yes. Our modular gearboxes (R, F, K, S series and planetary units) are designed to standard international mounting dimensions. They can achieve 1:1 direct interchangeability in mounting hole positions, shaft diameters, input flanges, and gear ratios without modifying your existing machinery.

What technical parameters do I need to provide to select the right gearbox?

To help our engineering team calculate the ideal model, please provide: input motor power (kW/HP), input/output speed (RPM) or gear ratio, required output torque (Nm), mounting position (horizontal/vertical), and the specific application or working environment.

What is the typical lead time for standard and customized gearboxes?

For standard modular models (R/F/K/S series and cycloidal gearboxes), lead time is typically 7–15 days. For customized units with special ratios, shafts, or special flanges, lead time is usually 20–30 days. Emergency spare parts are dispatched within 48 hours.

How do you guarantee zero oil leakage and transmission durability?

All gearboxes utilize precision-machined CNC housings for micro-level bore concentricity, premium dual-lip skeleton oil seals, and top-tier bearings (SKF/NSK/C&U). Every unit undergoes a 100% dynamic running test (vibration, noise, temperature rise) and sealing test before export packing.

What is your MOQ, warranty policy, and do you supply test reports?

Our MOQ is 1 unit (sample order supported). All products come with a 12-month comprehensive warranty. Each shipment can be provided with full documentation, including dynamic test records, material certificates, CMM gear inspection reports, and CE/ISO compliance certificates.