Which is the suitable material for gearbox and gearbox housings?

Traditionally, it is made from cast iron or cast aluminium, using methods of permanent mold casting or shell molding. Experimentally, though, composite materials have also been used.

What material are gearbox shafts made from?

Materials. The material used for ordinary shafts is mild steel. When high strength is required, an alloy steel such as nickel, nickel-chromium or chromium-vanadium steel is used. Shafts are generally formed by hot rolling and finished to size by cold drawing or turning and grinding.

Which material is most suitable for shaft material?

The material used for ordinary shafts is carbon steel of grades 40 C 8, 45 C 8, 50 C 4 and 50 C 12. Shafts are generally manufactured by hot rolling and finished to size by cold drawing or turning and grinding. The cold rolled shafts are stronger than hot rolled shafts but with higher residual stresses.

What are the considerations while designing gear box?

Requirements for Gear Design

• Overall gear ratio and number of different reductions and their gear ratios if multi-speed and the ratio tolerance.
• Size and envelope requirements.
• Weight restrictions.
• Input and output interfaces and dimensions.

What is gear box housing?

Gearbox housing is a protective casing which surrounds the components of a gearbox, providing physical protection and mechanical support for them.

What is transmission housing?

The Transmission housing protect the components of gearbox. It provides the fluid tight casing to hold the lubricants and provides support to moving components. Transmission housing or gearbox casing failure is the main problem for the vehicle manufacturer.

What is shaft design?

Shaft is a common and important machine element. The shaft is generally acted upon by bending moment, torsion and axial force. Design of shaft primarily involves in determining stresses at critical point in the shaft that is arising due to aforementioned loading. Other two similar forms of a shaft are axle and spindle.

How do you design gear box?

The first step in the gearbox design process is to select the material. A material is to be selected by doing intensive research on the properties of the various materials. A material is to be selected keeping in mind the various parameters like strength, weight, durability, cost and other parameters.

Which type of design criteria is used for design of gear?

For design of gears, determine elements such as size, tooth shape, pitch, number of teeth, amount of profile shift, material, need for heat treating and/or grinding, choice for kind of tooth surface finish, amount of backlash, helix angle, helix direction, method of mounting on shaft, precision class, etc., the …

What can we check the housing and gears for?

Use an inspection form to record important data that would otherwise be lost once cleaning is completed. For example, before cleaning the exterior of the gear housing, inspect it for signs of overheating, corrosion, contamination, oil leaks and damage.

How do you manufacture a gearbox?

Manufacture of gears consists of several processing operations:

1. preforming the blank (without or with teeth);
2. process of forged or cast steels need annealing of the blank;
3. machining preparation of the gear blank to the required dimensions;
4. machining producing teeth or forming teeth;
5. surface hardening of the gear teeth;

How accurate are gearbox bearings?

Gearboxes often have spherical roller bearings installed on slower speed reduction shafts which is interesting from a bearing application perspective. Gearboxes are accurate by design. Gear mesh, backlash and alignment are critical to gear life and reliable operation. Shaft design must maintain this accuracy without deflection.

What are the parts of a gearbox made of?

The gearboxes were used on automatic door openers on the ship. They were initially made of 316 stainless components, with o-ring seals, marine rated for spray, hard anodized finish, water resistant housing with brass worm and output gear. But the owner complained about the noise coming from the brass worm gear.

Do I need a drawing for a modified gearbox?

If you are looking for a modified standard gearbox, a drawing is required with your changes clearly noted to ensure there are no misunderstandings between yourself and the gearbox manufacturer. In custom situations it is important to initially describe any size restrictions to ensure the proposed gearbox fits appropriately into your system.

What are the materials used to make rolling bearings?

There are several housings for rolling bearings that can be made of spheroidal graphite cast iron or cast steel. Check the product sections for detailed information about which material options are available to you. All housings provide a good corrosion protection as standard. Housings made of pressed steel are zinc coated.