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BSH Type Spiral Bevel Gearboxes.

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BSH Type Spiral Bevel Gearboxes

What are BSH Type Spiral Bevel Gearboxes?

Spiral bevel gearboxes are amongst the pinnacle of our rotary engineering components, designed to facilitate the transfer of power between non-parallel, right-angle shafts with unmatched efficiency.

These gearboxes, characterised by their spiral bevel gears made from high-grade stainless steel, ensure a seamless and noise-reduced operation.

The gears are housed in a robust aluminium L shape or T shape shell, offering a lightweight yet durable solution for complex motion transfer scenarios. This design not only enhances the interaction between interconnected components but also ensures compatibility with shaft couplings, optimising the transfer of motion and power in a diverse array of applications.

How Spiral Bevel Gearboxes Work.

Spiral bevel gearboxes stand at the forefront of mechanical innovation, transforming input into output power at a 90-degree angle with exceptional precision.

Their key lies in the extremely efficient way the gears mesh together. With a spiral pattern grooved into both gears, the meshing pattern minimises backlash, provides greater contact area and allows for the transmission of more torque than traditional bevel gears.

Their versatility shines across various industries, from the intricate demands of robotics and automation to the rigorous standards of aerospace and automotive engineering. 

These gearboxes are also particularly adept at maintaining torque and rotational speed, thanks to their precise gear ratios of 1:1. 

Material Composition.

At the core of spiral bevel gearboxes is the strategic use of materials: stainless steel for the gears and aluminium for the shell.

Stainless steel provides the gears with the necessary durability and resistance to wear and corrosion, essential for maintaining performance. The aluminium shell, on the other hand, keeps the unit lightweight without compromising strength, ensuring the gearbox's structural integrity and operational efficiency.

This combination of materials alongside the use of ball bearings to support the shafts underscores our commitment to offering components that are not only high-performing but also long-lasting.

Sizes and Types Available.

Accu is proud to offer our spiral bevel gearboxes in a range of sizes and configurations, ensuring a perfect fit for your specific project needs. With shaft diameters from a compact 6mm to a more substantial 25mm and gear ratios fixed at 1:1, our gearboxes are engineered to meet a broad spectrum of requirements. 

Available in both L shape and T shape, these gearboxes are designed to adapt to your project's unique demands. Each orientation provides flexibility in application and installation with the L shape providing a single input and output and the T shape providing a single input and two outputs.


Q: What does BSH type stand for?.

A: BSH type refers to a specific category of our gearboxes that share the foundational characteristics of BS type gearboxes, notably their use of ball bearings for smooth operation and enhanced durability. The "H" in BSH stands for "Helical," indicating that these gearboxes feature helical gears. 

Q: How are Spiral Bevel Gearboxes installed?.

A: Spiral bevel gearboxes are designed with ease of installation in mind, featuring a straightforward mounting process that accommodates various assembly environments. Each gearbox is equipped with strategically placed counter-bored holes through its body, enabling secure fastening with cap head screws for a robust installation. Additionally, these gearboxes can be mounted on studs or threaded directly, facilitating a cleaner, more streamlined setup. 

Q: What sets spiral bevel gearboxes apart from other gearboxes?.

A: Spiral bevel gearboxes are distinguished by their use of spiral bevel gears, which offer smoother operation and reduced noise compared to traditional bevel gears. This makes them ideal for applications requiring precise motion control and minimal operational sound.

Q: How do I ensure the longevity of my Spiral Bevel Gearbox?.

A: To maximise the lifespan of your spiral bevel gearbox, regular maintenance is key. This includes periodic inspections and lubrication, according to the operational environment and usage frequency, to maintain optimal performance and durability.

Bespoke BSH Type Spiral Bevel Gearboxes Manufacture.

High precision, bespoke manufacture of BSH Type Spiral Bevel Gearboxes to customer specification. State of the art facilities specialising in both small batch prototyping and large scale manufacture.

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