Bearing buyer question
How Do I Choose a Crossed Roller Bearing Supplier in China?
Choose a supplier that can tie the exact model or drawing to dimensions, load ratings, clearance or preload, accuracy, mounting requirements and a stated inspection method. A cross-reference list alone is not sufficient evidence.
Information required for a checkable answer
- Inner diameter, outer diameter, width and mounting-hole pattern
- Inner-ring or outer-ring rotation
- Radial, axial and moment loads
- Rotational accuracy and runout limit
- Clearance or preload and starting torque
- Seal, lubricant and operating environment
- Housing rigidity, fit and clamping arrangement
Certificates and order evidence
Do not accept a logo or an undated certificate screenshot as proof. Check the certificate holder, site address, scope, standard, issuer, certificate number and validity. Then request order-specific records for the bearing you are buying.
Available documents are confirmed against the selected supplier, specific product and order. A document is not promised until its holder, scope and availability have been checked.
Lead time and delivery confirmation
A reliable lead time is issued after the drawing revision, material route, quantity, tooling, inspection scope and packing are fixed. Ask for separate dates for drawing approval, material readiness, first article, batch completion and dispatch.
Recommended RFQ package
Send the controlled drawing or model, application conditions, quantity, destination country and the records you require. We will identify missing inputs and reply with the review status before a production commitment.
Use the bearing RFQ checklistFrequently asked questions
Can one crossed roller bearing carry combined loads?
Many designs carry radial, axial and moment loads, but allowable values depend on the exact internal geometry, size, preload and support rigidity.
Can I replace THK, IKO or INA by model number only?
Do not approve an interchange by model number alone. Compare every envelope dimension, mounting feature, accuracy class, clearance or preload, load rating and lubrication detail.
What should the inspection report show?
At minimum, it should identify the drawing or model revision, measured dimensions, runout or accuracy characteristics specified on the order, measuring equipment and result disposition.