Reducer

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

SH Series Gear Reducer

The SH Series combines helical gear and worm gear transmission in a right-angle structure with a hollow shaft and shrink disc connection. It is used where output direction, shaft connection, and speed reduction need to be integrated into the same drive system. Common applications include conveyors, material handling equipment, packaging machinery, production lines, and rotary equipment.

Item	Value
Model	SH37–SH97
Ratio Range	6.8–288
Motor Power	0.12–22 kW
Output Torque	90–4,000 Nm
Mounting Type	Standard SH geared motor mounting
Output Shaft	Hollow Shaft with Shrink Disc

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Product Description

Key Technical Features & Advantages

Helical-Worm Gear Arrangement: The SH series uses a helical-worm gear arrangement to reduce motor speed and transmit rotation to the driven equipment.
Hollow Shaft Output: The hollow shaft provides a direct mechanical connection to the machine-side driven shaft.
Shrink Disk Connection: The shrink disk secures the machine-side shaft within the hollow shaft as part of the drive connection.
Right-Angle Drive Layout: The SH configuration uses a right-angle transmission arrangement, with the output shaft positioned perpendicular to the input shaft.
Multiple Model Sizes: The SH series covers SH37–SH97, with a similar basic housing arrangement and different dimensions across the models.
Defined Installation Configuration: Shaft, mounting, motor, and overall dimensions vary by model to suit different equipment layouts.

Product Design Configurations

SH..Series: Helical-worm geared motor with hollow shaft and shrink disk
SH Type: Standard hollow-shaft version with shrink disk connection
Frame Range: SH37–SH97
Gear Arrangement: Helical-worm gear transmission
Drive Layout: Right-angle transmission structure

Input & Output Configurations

Output Type: Hollow shaft
Output Connection: Machine-side shaft with shrink disk
Input Type: Integrated electric motor

Mounting Styles & Options

Mounting Arrangement: Gear unit and motor installation according to the selected SH model
Output Shaft: Hollow shaft with shrink disk connection
Motor Connection: Motor configuration according to the selected SH model
Installation Options: Model-specific shaft, mounting, motor, and overall dimensions

Motor Options & Accessories

Motor Configuration: Available according to the selected SH model and installation requirements

Primary Industrial Applications

Conveyor Systems
Material Handling Equipment
Packaging and Production Line Equipment
Rotary and Positioning Equipment
Mixing and Process Equipment

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.