Spiral bevel gearbox (commutator)

Main parameters: 
Output speed: 0.1~1450rpm. 
Output torque: up to 5000Nm 
Motor power: 0.18~90kw 
Spindle configuration：1-in & 1-out，1-in & 2-out，2-in & 1-out，2-in & 2-out. 

Product features: 
1. TC series spiral bevel gearbox is a transmission gearbox that adopts spiral bevel gear to have the function of the commutator, stable operation, and with large transmission torque.
2. It is used for in-line transmission or synchronized hoisting equipment.

Quick selection:

Remark: the weight without oil and motor, shaft and flange input add 10%.



Bevel Gear Transmission with Commutator Function
The TC series spiral bevel gearbox utilizes spiral bevel gear technology to support commutator operations in inline transmission systems. Its structure allows for smooth and stable power transmission while maintaining a compact form. Gear contact surfaces are optimized for torque transfer and minimal backlash. This makes the product suitable for synchronous hoisting applications or other inline mechanisms requiring low noise, low vibration, and long-term mechanical stability. Models range from TC2 to TC20, supporting different torque, shaft, and power requirements. The commutator function is essential in systems where directional control and torque synchronization are necessary, reflecting typical requirements of modern gear reducer assemblies. Its robust housing and well-machined internals ensure reliable operation across industrial use cases consistent with leading industrial gearbox manufacturers.

Flexible Shaft Configurations and Ratio Options
The TC series offers multiple shaft combinations, including 1-in & 1-out, 1-in & 2-out, 2-in & 1-out, and 2-in & 2-out arrangements. This flexibility enables the unit to meet diverse installation needs, particularly where synchronous or bidirectional power transfer is needed. Gear ratios range from 1:1 to 1:5, supporting different speed reduction goals. Depending on the model, the reducer supports motor powers from 0.18 to 90 kW and permitted torque from 30 to 5000 Nm. Center heights vary from 52 mm to 245 mm. The weight of the gearboxes, excluding motor and oil, spans from 2.2 kg to 300 kg, increasing depending on torque and shaft type. These parameters allow the TC series to fit applications requiring high-performance gearbox reducer components and effective gear reduction box assemblies under compact or heavy-load conditions.

Model Range Covering Light to Heavy-Duty Applications
From the lightweight TC2 with 30 Nm torque to the heavy-duty TC20 rated for 5000 Nm, the TC series offers a wide selection of sizes to match various engineering demands. Intermediate models like TC8, TC12, and TC16 are designed to deliver mid-range torque with motor power up to 110 kW. All models maintain consistent gear integrity and precision alignment due to strict machining tolerances. The standard solid shaft structure with flange or shaft input further enhances compatibility with existing drive systems. This series supports vertical or horizontal mounting orientations. Such structural design and adaptability make the TC series ideal for scenarios traditionally addressed using worm drive gearbox units or gear box motor drives, particularly where better torque management and directional flexibility are needed.


 
Product Advantages

Commutator Capability with Spiral Bevel Stability
Unlike traditional reducers, the TC series integrates commutator functionality into its bevel gear design, allowing the gearbox to manage direction changes efficiently. Spiral bevel gears offer smoother engagement and more accurate angular transmission, reducing shock loads during operation. This is crucial in synchronized lifting or mechanical systems where direction and torque must shift without delay or failure. Industries requiring consistent bidirectional motion will benefit from the integrated gear structure, reducing the need for external commutators. These features position the TC series as a preferred option among gear reducers manufacturers for complex drive systems requiring reliable transmission in both directions.

Multiple Shaft Layouts for Design Versatility
The availability of four shaft configurations allows the TC series to support a broad spectrum of drive layouts. Whether connecting a single input to dual outputs or vice versa, the gearbox accommodates non-standard orientations without requiring additional gear stages. This flexibility reduces part count and streamlines the overall system design. Equipment designers working with space or alignment constraints can implement TC units without compromising mechanical integrity. The multi-shaft adaptability also makes it a viable replacement for outdated worm gearbox systems that rely on single-direction drive. By simplifying the drivetrain, it reduces installation time and enhances system serviceability in reducer gearbox applications.

Wide Torque and Speed Support Across Compact Sizes
Despite their size, TC series units can deliver torque outputs up to 5000 Nm and support input speeds that produce output as low as 0.1 rpm and up to 1450 rpm. The compact construction keeps the footprint small, making the gearbox suitable for space-constrained environments. The use of hardened, precision-machined bevel gears contributes to efficient power transfer with minimal frictional losses. With motor input ranging from 0.18 kW to 90 kW, the TC series supports light-to-heavy duty systems while maintaining performance. These features are especially relevant to clients seeking reliable gearbox reducer components that replace bulkier or less efficient worm gear reducer alternatives.

 

Use Scenarios

Inline Drive Systems with Directional Change Requirements
In systems where inline shaft arrangement is critical but directional control is also required, the TC series provides a solution by combining spiral bevel gearing with commutator support. Applications such as synchronized lifting platforms, line-guided conveyors, and multi-station production machines benefit from this layout. The smooth bevel engagement and flexible shaft configuration reduce the mechanical complexity typical of multi-unit setups. TC series reducers are well-suited to replace or complement electric motor gearbox units in automation systems that demand precise direction and position coordination.

Synchronous Lifting and Hoisting Equipment
Hoisting systems, especially those requiring synchronized lift from multiple points, need gearboxes capable of delivering uniform torque with minimal phase deviation. TC series units configured with 1-in & 2-out or 2-in & 1-out shaft types provide consistent output alignment. This is especially critical in safety-sensitive systems such as stage lifts, construction elevators, or industrial hoists. Compared to traditional worm gear box setups, TC gearboxes offer better efficiency and longer service life due to their multi-point contact and reduced gear wear. Their bevel-based motion path also ensures smoother lifting under variable load.

Transmission Systems for Mechanical Actuation Equipment
Equipment such as trowelling machines, cam-rotor pumps, and conveyor belts benefit from the TC series' ability to deliver torque reliably across changing speeds. Whether the use case requires a 1:1 ratio or a reduced output speed for high-torque actuation, the model range accommodates all setups. The reducers integrate seamlessly into systems previously using gear box motor drives, while offering improved mechanical efficiency. In mechanical actuation where low output speed and compact gear dimensions are essential, the TC series offers consistent performance and installation flexibility.


 
About Us

Zhejiang Shuanglian Machinery Co., Ltd. (SLM) was founded in 1988 and brings over 30 years of experience in manufacturing gearboxes, gear reducers, and gearmotor solutions. The company is based in the coastal province of Zhejiang and is a senior member of both the China Speed Reducer Industry Association and the China Committee of Gear. SLM has developed a wide range of products including helical gearmotors, worm gearboxes, planetary gear reducers, cycloidal drives, variators, and customized modular gear systems.

SLM operates under ISO9001:2008 quality control standards and maintains a comprehensive production line that includes CNC machining centers, gear grinding equipment, and gear inspection systems. Its annual production capacity reaches 100,000 sets, serving both domestic and international markets including Europe, the Americas, and Southeast Asia. SLM products are widely used in metallurgy, mining, construction machinery, energy, packaging, chemical, and textile industries. As one of the recognized industrial gearbox manufacturers and gear reducers manufacturers, SLM continues to invest in R&D and customization to meet the evolving needs of its global customer base.


 
FAQ

What is the maximum torque output of the TC series spiral bevel gearbox?
The TC series supports a maximum output torque of up to 5000 Nm depending on model, suitable for medium to heavy-duty gear reducer applications requiring precise inline power transfer.

Can I use the TC series gearbox in applications requiring multiple outputs from a single input?
Yes, the gearbox supports configurations such as 1-in & 2-out and 2-in & 1-out, allowing it to serve multi-shaft systems where directional distribution is essential, replacing more complex gearbox reducer designs.

What gear ratios are available in the TC series range?
The TC series offers gear ratios from 1:1 to 1:5 depending on model, making it suitable for applications where low-speed, high-torque output is required in compact worm gear reducer replacements.

Is the TC series gearbox compatible with direct motor coupling?
Yes, the gearbox is designed to accommodate direct motor inputs with power ratings from 0.18 to 90 kW. Shaft and flange input options are also available for integration into different electric motor gearbox setups.

Does the spiral bevel gearbox support vertical and horizontal mounting?
The structural design of the TC series allows for flexible mounting orientation, supporting both vertical and horizontal installations commonly required in reducer gearbox assemblies.


Specify your required shaft configuration and torque now to select your TC spiral bevel gear unit today!