Reducer

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

SAZ Series Gear Reducer

The SAZ series is a B14 flange-mounted helical-worm gear reducer with a hollow output shaft, designed for compact and efficient power transmission. It features a rigid cast housing, flange mounting, and hollow-shaft configuration for convenient installation and direct connection with driven equipment, and is suitable for conveyors, material handling equipment, packaging machinery, feeding systems, mixers, processing equipment, lifting systems, and automated production lines.

Item	Value
Model	SAZ47–SAZ97
Ratio Range	9.96–244.74
Motor Power	0.18–22 kW
Output Torque	Up to 4,000 Nm
Mounting Type	B14 Flange Mounted
Output Shaft	Hollow Shaft

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Product Description

Key Technical Features & Advantages

Helical-Worm Gear Transmission: Combines helical and worm gears for smooth transmission, compact design, and a wide range of reduction ratios.
B14 Flange-Mounted Design: Enables direct and space-saving installation on driven equipment.
Hollow Output Shaft: Allows direct mounting onto the driven machine shaft, reducing the need for additional couplings.
Right-Angle Drive Layout: Provides a 90° transmission arrangement for compact equipment layouts.
Compact & Rigid Housing: The integrated cast housing provides stable support and efficient use of installation space.
Smooth & Quiet Operation: Designed for stable torque transmission with reduced vibration and operating noise.
Multiple Frame Sizes: SAZ47–SAZ97covers different transmission and installation requirements.
Flexible Motor Matching: Can be matched with different motor sizes according to application requirements.

Product Design Configurations

SAZ Series: B14 flange-mounted helical-worm gear reducer with hollow output shaft
SAZ47 – SAZ97: Multiple frame sizes covering different transmission requirements
Gear Arrangement: Helical gear and worm gear transmission
Drive Layout: Right-angle transmission
Housing Design: Compact cast housing with integrated mounting and inspection features
Output Bore Options: Available with different hollow-bore configurations according to frame size and application requirements

Input & Output Configurations

Output Type: Hollow output shaft with keyed bore
Output Bore Options:
Larger-diameter hollow bore configuration
Smaller-diameter hollow bore configuration
Input Types:
Direct-mounted electric motor
Compatible IEC motor configuration
Motor sizes matched to the SAZ frame and transmission requirements
Shaft Connection: Direct mounting onto the driven machine shaft through the hollow output bore

Mounting Styles & Options

Mounting Method: B14 flange-mounted
Output Shaft: Hollow shaft with keyway
Motor Connection: Direct motor mounting with compatible motor dimensions
Flange Configuration: Compact flange arrangement for direct equipment installation
Installation Options: Different hollow-bore and flange dimensions according to SAZ47–SAZ97 frame size
Special Flange Requirement: A special flange can be provided where required by the equipment installation design

Motor Options & Accessories

Compatible AC electric motors
Different motor sizes according to reducer frame and application requirements
Motor mounting adapters and connection components
Brake motor configurations where required
Thermal protection sensors
Forced cooling fans
Encoders
Anti-condensation heaters
Mechanical backstops

Primary Industrial Applications

Conveyor Systems
Material Handling Equipment
Packaging Machinery
Food Processing Machinery
Mixing and Agitation Equipment
Feeding Machinery
Lifting and Transfer Equipment
Warehouse and Logistics Systems
Automated Production Lines
Processing Machinery
General Industrial Machinery

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.