Reducer

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

KA Series Gear Reducer

The KA Series Gear Reducer is designed for industrial equipment requiring right-angle transmission, high torque output, and reliable continuous operation. It is suitable for conveyors, material handling systems, automated machinery, mining equipment, and other heavy-duty applications.

Item	Value
Model	KA37 – KA187
Ratio Range	5.36 – 303.00
Motor Power	0.12 – 200 kW
Output Torque	90 – 18,000 Nm
Mounting Type	Foot Mounted / Shaft Mounted
Output Shaft	Solid Shaft / Hollow Shaft

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Product Description

Key Technical Features & Advantages

Helical Gear Transmission: The KA series uses a helical gear transmission for smooth power transfer and stable operation in industrial drive systems.
Shaft-Mounted Design: The reducer is mounted directly onto the driven shaft, reducing the need for additional coupling and base structures.
Hollow Output Shaft: The hollow shaft allows direct connection with the machine shaft, making installation more compact and reducing installation space.
Compact Structure: The shaft-mounted arrangement keeps the drive unit close to the driven equipment, which is useful where installation space is limited.
Stable Power Transmission: Precision-machined helical gears provide steady torque transmission for continuous industrial operation.
Flexible Installation: The KA series can be installed in different equipment layouts according to the driven shaft position and mounting requirements.
Easy Maintenance: The simple shaft-mounted structure makes inspection, removal, and replacement more convenient during equipment maintenance.

Product Design Configurations

KA.. Series: Shaft-mounted helical gear reducer with hollow output shaft
KA Series: Designed for direct installation on the driven machine shaft
Hollow Shaft Configuration: Provides a compact connection between the reducer and driven equipment
Multiple Frame Sizes: Different reducer sizes are available according to motor power, output speed, and torque requirements

Input & Output Configurations

Output Type: Hollow shaft
Input Type:
- Direct motor-mounted configuration
- Motor flange connection
- IEC motor connection
- Customized motor connection for special applications

Mounting Styles & Options

Mounting Method: Shaft-mounted
Output Connection: Hollow shaft fitted directly onto the driven shaft
Torque Arm: Torque-arm mounting can be used to support the reducer and control housing movement during operation
Installation Options: Different shaft diameters, mounting positions, and connection arrangements can be selected according to equipment requirements

Motor Options & Accessories

Motor matching for different KA frame sizes
PTC thermistors and thermostat sensors
Independent cooling fans
Mechanical holding brakes
Encoders for speed and position feedback
Anti-condensation heaters
Mechanical backstops for non-reversing applications
Torque arms and mounting accessories

Primary Industrial Applications

Belt Conveyor Systems
Roller Conveyor Equipment
Material Handling Machinery
Packaging Machinery
Warehouse and Logistics Equipment
Bulk Material Handling
Automated Production Lines
Feeding and Transfer Equipment
Food Processing Machinery
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.

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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.