China High Precision Steel Bearing NRA Nrb Roller 9.00*8.90mm

• Customization: Available
• Customized: Customized
• Certification: ISO
• Model NO.: 9.00*8.90
• Universal: Yes
• Type: Bearing Roller
• Material: Chrome Steel
• Hardness: HRC60-65 .
• Sample Confrimation: Available
• Special Mateiral: Available
• Price: Negotiable
• Transport Package: Plastic Bag, in Box, in Carbon in Wooden Case
• Specification: 9.00*8.90
• Trademark: Neutral packaging
• Origin: China
• HS Code: 8482400000
• Production Capacity: 500000000

Product Description

High precision steel bearing roller

Size customizaiton available
Diameter from 0.50mm to 30mm,
Lenght from 2.00mm to 300mm,
Quality Grade: G5, G3, G5  also according to client's require, by drawing or sample
Brand: KN STEEL BALL
Price: depend on roller size, quality grade, material, quantity.  
Material:  mainly are chrome steel,GCR15, AISI52100, 100cr6, stainless steel AISI306, AISI304, AISI420,AISI440, AISI440C, and carbon steel AISI1015, and speical material customized by client.
Customization: Roller size, shape, could be produced according to client's drawing, or samples. 
Hardness: HRC60-65 for chrome steel roller, and HRC25-28 for stainless steel roller,  HRC58-61 for carbon steel roller
For bulk purchase, sample free for confirmation supplied by KN STEEL BALL.
Application for roller bearing production, and other machinery parts. application areas: Bearing rollers, nozzles of turbojet engine nozzles, plungers, valves, bushings, etc.
Packing: usuall in plastic bag, then in box, then in carton, then on pallet. Or, customized by user special requirement.
Delivery terms: For stock items, delivered within 3 days. For new items, usually 15-45 days, according to quantity and qaulity grade.
Delivery by FEDEX, DHL courier for small quantity.  And by train, air, sea for larger quantity.
Outer circle tolerance 2-5um length tolerance 30um verticality≤15um end runout≤15um roundness≤1um surface roughness≤Ra1um
Inspection instruments:

 

 

Name	V Series Guide Rollers
Model	9.00*8.90
Material	GCR15, SUJ2 , AISI52001
Hardness	HRC60-65
Out Diameter Tolerance	0.001mm
Length Tolerance	+0/-0.02mm
Parallelism	0.01mm
Perpendicularity	0.01mm
Endface runout:	0.01mm
Roundness:	0.0005mm
Roughness	Ra0.06um

 

 

V3.0*2.90	V4.0*3.90	V5.0*4.90
V6.0*5.90	V9.0*8.90	V12*11.85

Application

1: Crossed roller linear guides
2: Cylindrical roller type linear rails
3: Anti-creep crossed roller linear guide
4: Crossed roller bearings
5: Linear bearings, linear motors, 
6: oneway bearings oneway clutches
7: Heavy-load linear rails, linear rails for CNC and some other rails.

Product Description

 

Special roller of speical size, tolerance, special material, customization is available.