Reducer

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

FH Series Gear Reducer

The FH series is a hollow-shaft gear reducer with a hollow output shaft and shrink disc mounting, providing easy installation, secure shaft connection, and compact construction. It is suitable for conveyors, material handling, packaging machinery, mixers, lifting systems, and automated production lines.

Item	Value
Model	FH37–FH157
Ratio Range	3.77–281.71
Motor Power	0.12–200 kW
Output Torque	200–18,000 Nm
Mounting Type	Shaft Mounted / Flange Mounted
Output Shaft	Hollow Shaft with Shrink Disc

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Product Description

Key Technical Features & Advantages

Hollow-Shaft Worm Gear Transmission: The FH series uses a worm gear transmission for smooth power transfer, high reduction ratios, and stable operation.
Shrink Disc Mounted Design: The hollow output shaft is equipped with a shrink disc for a secure, backlash-free connection with the driven shaft and easy installation.
Hollow Output Shaft: The hollow shaft allows direct mounting onto the driven machine shaft, reducing the need for additional coupling components.
Right-Angle Drive Layout: The input and output shafts are arranged at 90°, making the FH series suitable for compact drive systems.
Compact Housing: The integrated cast housing provides a space-saving structure and keeps the reducer close to the driven equipment.
Smooth & Quiet Operation: The worm gear arrangement provides stable transmission with reduced vibration and operating noise.
Flexible Motor Matching: The FH series can be paired with different motor sizes and configurations according to equipment requirements.

Product Design Configurations

FH Series: Hollow-shaft, shrink-disc-mounted worm gear reducer
FH37 – FH157: Multiple frame sizes for different torque and load requirements
Gear Arrangement: Worm gear transmission
Drive Layout: Right-angle transmission
Output Connection: Hollow shaft with shrink disc

Input & Output Configurations

Output Type: Hollow shaft
Output Mounting: Shrink disc connection
Input Types:
Direct-coupled electric motor
Standard IEC motor connection
Customized motor input

Mounting Styles & Options

Mounting Method: Shaft-mounted installation
Output Shaft: Hollow shaft with shrink disc
Motor Connection: Standard IEC or customized motor configurations
Installation Options: Different mounting arrangements according to equipment requirements

Motor Options & Accessories

Thermal protection sensors
Forced cooling fans
Mechanical brakes
Encoders
Anti-condensation heaters
Mechanical backstops
Motor adapters and mounting accessories

Primary Industrial Applications

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

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.