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Home / Product Range / Industrial Gears / 45# Steel Bevel Gears / M4 Z20 90° Straight Bevel Gear, for Agricultural Machinery and Low-Speed Direction-Changing Transmission
  • M4 Z20 90° Straight Bevel Gear, for Agricultural Machinery and Low-Speed Direction-Changing Transmission
  • M4 Z20 90° Straight Bevel Gear, for Agricultural Machinery and Low-Speed Direction-Changing Transmission
45# Steel Bevel Gears

M4 Z20 90° Straight Bevel Gear, for Agricultural Machinery and Low-Speed Direction-Changing Transmission

The M4 Z20 90° straight bevel gear is a standardized tool for transmitting power between intersecting shafts. With a large-end module of 4 and 20 teeth, it is designed for 90-degree perpendicular direction-changing transmission. The quenched and tempered 45# steel provides strength along with excellent value for money.

Item Specification
Module at large end 4
Number of teeth 20
Shaft angle 90°
Pressure angle 20°
Material 45# steel, quenched and tempered
Pitch cone angle 45°
Transmission ratio 1:1~1:6
Pitch line velocity ≤5m/s
Transmission efficiency 94%~98%
Machining Gear planing; hardening available
Key Product Advantages Key Selling Points Applications and Scenarios Contact Us

1. Precise 90° direction change: When equipment space is limited and the direction of power transmission must change, the straight bevel gear is the most direct and compact solution, eliminating the need for a complex direction-changing mechanism.
2. An excellent answer on cost and lead time: Compared with spiral bevel gears, which are hard to machine and need special equipment, straight bevel gears are produced by gear planing, with a low manufacturing barrier and mature process. At low speed and low-to-medium loads, performance fully meets requirements while purchasing cost is greatly reduced.
3. Quenched and tempered 45# steel, sturdy and durable: The material has good toughness and impact resistance to handle the vibration and dust common in agricultural and construction machinery; tooth-surface hardening is available on request to further improve wear resistance.
4. Easy installation and commissioning: With a 45° pitch cone angle and a 1:1 transmission ratio (constant-speed direction change), it tolerates assembly errors well, making on-site repair and quick replacement convenient.

The "good-enough choice" for low-to-medium-speed direction changes: It does not blindly chase high-cost spiral bevel teeth, but focuses on general machinery direction-change points that do not need very high pitch line velocity, unbeatable value for money.
Standard stock, ready to ship anytime: M4 is a common module, and stocked parts can rescue customers in urgent repairs; adjustment of mounting distance, bore, and face width is supported.

Agricultural machinery: Steering mechanisms and power take-off (PTO) direction changes on tractors and harvesters.
Construction and lifting: 90° direction-changing drives in winches, small cranes, and mining machinery.
Industrial machine tools: Feed drives of machine tools and vertical direction-changing mechanisms of auxiliary worktables.
Packaging and light industry: Indexing mechanisms of automatic packaging machines and direction-change nodes in non-standard automation assemblies.

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About Rentai
Transmission Equipment

Shanghai Rentai Transmission Equipment Co., Ltd. is a manufacturer specializing in R&D, production and export of mechanical transmission components. Our main products include taper lock pulleys, taper lock bushes, timing pulleys, V-belts and timing belts. We also provide OEM & ODM custom service for non-standard transmission parts. Our factory covers over 8000 square meters, with more than 100 employees including 22 technical staff. We integrate casting, machining and finishing, equipped with CNC machines and testing instruments, with an annual casting output of 2000 tons. Supported by complete quality management system and international standards, our products are exported to Southeast Asia, Middle East, Europe and America, delivering reliable transmission solutions for global industrial clients.

  • 10+

    Industry Experience

  • 100+

    Production staff

  • 2000+Ton

    Annual Production

  • 8000+㎡

    Factory Area

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