What does G10 mean for steel balls?
Keep precision grade, steel designation and nominal diameter separate when preparing a bearing ball specification.
Read articleBOYA INDUSTRIES / PRECISION & SUPPLY
Technical Articles
Original guidance for specifying precision steel balls and preparing a clear, complete request for quotation.
READING GUIDE
Understand, specify, enquire
Three practical guides cover grade terminology, metric and inch sizes, and the details needed for a quotation.
How to specify steel balls in an RFQ
A practical checklist for material, grade, diameter, quantity and the details that make a steel ball quotation useful.
Read articleMetric vs inch steel ball sizes
Understand the difference between an exact inch conversion and a rounded metric size label before specifying a precision ball.
Read articleThree fields to keep separate
01
Material designation
Record the requested material and standard in their own field. Attach your drawing or material specification.
02
Precision requirements
Include the grade or drawing tolerance and the inspection requirements used to accept the order.
03
Size and quantity
Keep diameter, dimension unit, quantity and quantity unit separate. Put each size on its own line.
Put the guide into practice
Look up your diameter in the size chart, then carry the selected size into the RFQ form.