Identify the complete assembly or replacement part
A trolley wheel and a complete castor are different purchase items. State whether you need the wheel alone, a fixed castor, a swivel castor or an assembly with a brake. For ball transfer units, send the existing unit reference and mounting details. A photograph is useful, but keep it with the dimensions and quantity needed for the quote.
Record the mounting dimensions
For castors, include the mounting plate or stem specification as well as wheel diameter and width. For a wheel-only replacement, include the bore and hub dimensions from the drawing. For ball transfer units, provide the body and fixing dimensions. This makes it easier to check a proposed replacement against the existing trolley or transfer table.
Describe the load and working environment
Share the total equipment load, operating conditions and the specification approved by your engineering team. Describe the floor, exposure to water or chemicals, and any temperature requirement. Do not choose a replacement solely because its outside diameter matches the old part. Ask for the load rating and material details of the actual model quoted.
Precision balls and tool steel rollers
For loose steel balls, non-ferrous balls, ceramic balls or glass balls, specify the material, diameter, tolerance or grade and quantity. For tool steel rollers, attach the drawing and required material or hardness specification. These are precision component enquiries rather than general trolley wheel requirements, so list them separately.
Movement component enquiries in Chennai
South India Bearing Co. handles industrial wheel, castor and movement component enquiries in Chennai. Both castor and caster spellings are commonly used for the product; the full specification identifies the item you need. Send the drawing, quantity and delivery details through the relevant product enquiry page.
Related products and catalogues
Browse the relevant South India Bearing Co. product pages for range details, manufacturer catalogues and quotation enquiries.

