Reducer

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

KAF Series Gear Reducer

The KAF Series is a B5 flange mounted helical-bevel gear reducer with a hollow output shaft. Its right-angle transmission structure is used in conveyor systems, material handling equipment, packaging machinery, processing equipment, automated production lines, and other industrial machinery requiring flange-mounted installation and hollow shaft output.

Item

Value

Model

KAF37–KAF157

Ratio Range

3.77–281.71

Motor Power

0.12–200 kW

Output Torque

Up to 20,000 Nm

Mounting Type

B5 Flange Mounted

Output Shaft

Hollow Shaft

 

Product Description

Key Technical Features & Advantages

  • Helical-Bevel Gear Transmission: The KAF series adopts high-precision helical-bevel gear set for efficient power transmission, high load capacity and low noise operation.
  • B5 Flange-Mounted Design: KAF type features B5 flange mounting structure, which can be directly attached to the mating equipment, saving installation space.
  • Right-Angle Drive Layout: Input shaft and output shaft are arranged at 90 degrees, realizing compact right-angle power transmission.
  • Compact Cast Iron Housing: Robust cast iron housing delivers high rigidity and vibration resistance, suitable for confined installation environments.
  • Hollow Output Shaft: Hollow output shaft design enables easy shaft mounting connection with driven machine, simplifies assembly.
  • Smooth & Stable Operation: Precisely ground helical-bevel gears ensure gentle meshing, low vibration and long service life.
  • Flexible Motor Matching: The KAF series supports matching with various standard IEC motors or customized motors according to different torque and speed requirements.

Product Design Configurations

  • KAF.. Series: B5 flange mounted helical-bevel gear reducer
  • KAF Type: B5 flange mounted version with hollow output shaft
  • Frame Range: Available in multiple frame sizes from KAF37 to KAF157
  • Gear Arrangement: Helical-bevel two-stage gear transmission
  • Drive Layout: Right angle (90°) power transmission structure

Input & Output Configurations

  • Output Type: Hollow output shaft
  • Input Types:

o Direct-coupled electric motor

o Standard IEC motor adapter

o Customized motor input

o Solid input shaft extension

Mounting Styles & Options

  • Mounting Method: B5 flange mounted
  • Output Shaft: Hollow output shaft
  • Motor Connection: Standard IEC or customized motor configurations
  • Installation Options: Various flange specifications to meet different equipment installation 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
  • Automated Production Lines
  • Textile Machinery
  • Food Processing Machinery
  • Printing Machinery
  • Pumps and Fans
  • General Industrial Machinery

Our Core Strengths

Smart Warehousing & Global Delivery
Smart Warehousing & Global Delivery
Modern Manufacturing Facility
Modern Manufacturing Facility
High-Precision Inspection
High-Precision Inspection
Full-Range Gearbox Solutions
Full-Range Gearbox Solutions

Standardized Production Process Flow

  1. 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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  2. 02
    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.

  3. 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.

    03
  4. 04
    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.

  5. 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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  6. 06
    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.

Global logistics and shipping
Packing photo Packing photo Packing photo

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.

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