Reducer

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

KHB Series Gear Reducer

The KHB Series Gear Reducer is a K Series gearbox with a hollow output shaft for direct connection to the driven equipment. Its helical-bevel gear transmission provides speed reduction and power transfer, while the compact housing and hollow shaft design make it suitable for conveyors, material handling equipment, screw conveyors, pallet handling, and other industrial drive systems.

Item	Value
Model	KHB47–KHB107
Ratio Range	5.36–197.37
Motor Power	0.12–200 kW
Output Torque	200–50,000 Nm
Housing Type	K Series Housing
Output Shaft	Hollow Shaft

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Product Description

Key Technical Features & Advantages

K Series Housing: The KHB type uses a K Series housing design with the same basic external arrangement across the KHB47–KHB107 range.
Hollow Output Shaft: The hollow shaft provides a direct mechanical interface with the driven machine shaft.
KHB47–KHB107 Range: Seven frame sizes cover different equipment dimensions and drive requirements.
Size-Specific Dimensions: Housing, shaft, mounting, and motor-related dimensions vary according to the selected KHB model.
Motor Matching: Different motor frame combinations are available across the KHB size range.
Machine-Side Shaft Connection: The hollow output configuration suits equipment designed with a corresponding driven shaft.
Technical Drawing Support: Model-specific drawings provide dimensional information for motor, shaft, mounting, and overall equipment integration.

Product Design Configurations

KHB Series: K Series housing with hollow output shaft
KHB47 – KHB107: Seven frame sizes for different drive requirements
Housing: K Series housing design
Output Configuration: Hollow output shaft
External Arrangement: Same basic configuration, with dimensions varying by model

Input & Output Configurations

Output Type: Hollow shaft
Input Configuration:

Motor connection according to the selected KHB model
Different motor frame combinations
Motor dimensions matched to the gear unit configuration

Mounting Styles & Options

Housing Type: K Series housing
Output Shaft: Hollow output shaft
Machine Connection: Driven shaft connection through the hollow output
Dimensional Options: Model-specific shaft, mounting, flange, and overall dimensions
Installation Arrangement: Selected according to equipment layout and available space

Motor Options & Accessories

Motor frame combinations according to KHB model
Motor mounting dimensions
Motor connection configurations
Shaft and mounting components according to selected model
Model-specific technical drawings for installation planning

Primary Industrial Applications

Belt Conveyor Systems
Chain Conveyor Systems
Pallet Conveyor Equipment
Screw Conveyor Equipment
Material Transfer Equipment
Pallet Handling Equipment
Production-Line Conveying Equipment
Feeding and Transfer Sections
Packaging Conveyor Equipment
Sorting and Transfer 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.