Reducer

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

KF Series Gear Reducer

The KF Series Helical-Bevel Gear Reducer/Gearmotor belongs to the four modular industrial gearbox families (R, K, F, S). Adopting helical and bevel gear stages, it achieves 90° right-angle transmission, featuring compact layout, stable torque output and flexible flange mounting. Equipped with B5 flange connection and solid output shaft, it is widely used in conveyors, material handling equipment, packaging machinery and automated production lines.

Get In Touch WhatsApp

Product Description

Key Technical Features & Advantages

Helical-Bevel Gear Transmission: The KF series combines helical and bevel gears for stable right-angle power transmission and compact drive arrangements.
B5 Flange-Mounted Design: The B5 mounting configuration allows the reducer to connect directly with the driven equipment or mounting structure without a separate foot base.
Solid Output Shaft: The solid output shaft provides a firm mechanical connection for conveyors, rotating equipment, and other industrial drive systems.
Compact Right-Angle Structure: The gear arrangement keeps the input and output shafts at a 90° angle, helping reduce installation space in machines with limited mounting room.
Rigid Housing Construction: The housing supports the gear train and maintains stable alignment during continuous operation and varying load conditions.
Multiple Frame Sizes: KF37–KF157 covers multiple housing sizes for different motor power, reduction ratio, and output torque requirements.

Product Design Configurations

KF.. Series: B5 flange-mounted helical-bevel gear reducer with solid output shaft
KF37–KF157: Available in multiple frame sizes
Output Configuration: Solid output shaft
Mounting Configuration: B5 flange-mounted

Input & Output Configurations

Output Type: Solid shaft
Input Types:

Direct motor-mounted configuration
Standard IEC motor adapter
Servomotor input adapter
Solid input shaft extension

Mounting Styles & Options

Mounting Method: B5 flange-mounted
Output Shaft: Solid shaft
Mounting Sizes: KF37–KF157
Main Options:

Output flanges
Motor adapters
Brake motors
Other mounting accessories according to equipment requirements

Motor Options & Accessories

PTC thermistors and thermostat sensors
Forced cooling auxiliary fans
Mechanical holding and safety brakes
Optical or magnetic encoders
Anti-condensation space heaters
Mechanical backstops for non-reversing drives
Motor adapters and mounting accessories

Primary Industrial Applications

Conveyor Systems
Material Handling Equipment
Packaging Machinery
Automated Production Lines
Food Processing Equipment
Mining and Bulk Material Handling
Warehouse and Logistics Equipment
Lifting and Transfer Machinery
Environmental Equipment
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.

01
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.
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
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.
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.

05
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.

Get In Touch

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.