Shaft-mounted hardened gear reducer

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I. Product Overview

The SMR and ZGY series suspended hardened gear reducers are shaft-mounted 

transmission devices specifically designed for conveying equipment such as belt conveyors, 

bucket elevators, and scraper conveyors. They feature direct suspension installation, 

eliminating the need for a mounting platform and omitting couplings, 

bases, and other accessories, significantly simplifying the equipment structure. 

They are core transmission components in conveying systems in industries such as mining

building materials, metallurgy, and chemicals.

II. Models and Specifications

1. ZGY Series Shaft-Mounted Reducers

Specification codes are based on the center distance (mm) of the low-speed stage, 

with a total of 9 specifications:

ZGY75 | ZGY90 | ZGY106 | ZGY125 | ZGY150 | ZGY180 | ZGY212 | ZGY250 | ZGY300

Transmission ratio range: 10~31.5 (inclusive of 10, 11.2, 12.5, 14, 16, 18, 20, 22.4, 25, 28, 31.5)

Suitable scenarios: Medium and light-load conveying equipment, 

such as belt conveyors and small bucket elevators.

2. SMR Series Suspended Gear Reducers

Specification codes are based on the center distance (mm) of the low-speed stage

with 5 main specifications:

SMR498 | SMR550 | SMR625 | SMR710 | SMR850

Transmission ratio range: 10~80 (inclusive of 10, 12.5, 16, 20, 25, 31.5, 40, 50, 63, 80)

Suitable scenarios: Heavy-duty conveying equipment, such as large belt conveyors

mixing plants, and sand and gravel production lines.

III. Core Technical Parameters (Typical Specifications Example)

Table Series Model Center Distance (mm) Rated Power Range (kW) 

Output Torque Range (N・m) Transmission Efficiency Input Speed (rpm) Protection Class

ZGY Series ZGY125 125 1.5~15 1000~6000 ≥94% ≤1500 IP54

ZGY212 212 5~45 3000~18000 ≥94% ≤1500 IP54

SMR Series SMR625 625 7.5~90 8000~100000 ≥93% ≤1500 IP55

SMR710 710 15~110 12000~150000 ≥93% ≤1500 IP55

IV. Core Product Features

1. 1. **Suspended Installation, Simplified Structure:** 

Directly suspended from the main unit's power input shaft, 

eliminating the need for a base and couplings. 

This saves over 40% of installation space, allowing for more flexible equipment layout 

and adapting to compact installation requirements of conveying equipment.

2. **Hardened Gear Surface Process, High Load Capacity and Long Service Life:** 

The gears are made of high-strength low-carbon alloy steel through carburizing, quenching, 

and grinding processes. The gear surface hardness is HRC58-62, 

and the precision reaches GB/T 10095 Grade 6. 

This increases load capacity by 30%, and the rated service life exceeds 10,000 hours. 

It also exhibits excellent impact and fatigue resistance.

3. **Lightweight Design, Reduced Frame Load:** Compared to traditional reducers, 

the weight is reduced by 30%-50% under the same torque

significantly reducing the load on the main unit frame. 

This results in smoother equipment operation and lower maintenance costs.

4. **Bidirectional Operation + Optional Backstop Device:** Supports bidirectional 

operation (forward and reverse). A backstop device can be configured as needed 

to prevent material reversal when the equipment stops

ensuring the safety and stability of the conveying system.

5. Low noise, high efficiency, and stable operation: High-precision 

gear meshing and optimized housing structure 

result in operating noise ≤75dB and transmission efficiency ≥93%. 

Long-term operation is free from overheating and leakage

making it suitable for harsh working conditions.

6. Easy-maintain design, reducing operating costs:

 Modular structure design allows for easy disassembly and replacement of key components

convenient lubrication and maintenance, reducing downtime and improving equipment uptime.

V. Main Application Scenarios:

Building Materials Industry: Belt conveyors for mixing plants, aggregate conveying lines, 

cement conveying systems;

Mining Industry: Belt conveyors, scraper conveyors, bucket elevators;

Metallurgical Industry: Raw material conveying, sintered ore conveying, 

continuous casting conveying equipment;

Chemical/Energy Industry: Chemical raw material conveying, coal conveying

 power coal conveying systems;

Other General Scenarios: Various conveying and lifting equipment requiring suspended installation.

VI. Huxing Customized Services

Non-standard customization is supported: special transmission ratios

special installation dimensions, and high protection ratings (IP65) are available.

Fast delivery: standard models are in stock; non-standard customization takes 7-15 days.

Technical support: We provide selection guidance based on operating conditions

installation and commissioning guidance, and full-cycle after-sales support.

For detailed selection manuals or technical drawings, please contact us for free technical consultation and quotation!