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Bearing steel tube

Bearing steel tube

Process: Cold drawn and cold-rolled, spheroidized annealing
Surface: Fine and smooth without scratches or burrs
Ra：≤0.8‑1.6μm
Material: Common GCr15, GCr9
Specification: Outer diameter 10-180mm, wall thickness 1-20mm customizable

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Bearing steel tube

Select the number of specifications

OD*WT（mm）

25*6 30*7 35*8 40*10 45*12 50*12 55*14 60*14 65*16 Custom Specs

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Product Detail


Product Overview：

Bearing steel pipe is a type of seamless steel pipe used for manufacturing ordinary rolling bearing rings. The outer diameter of the steel pipe is 25-180mm, and the wall thickness is 3.5-20mm, divided into two types: ordinary precision and higher precision. Bearing steel is the steel used to manufacture ball bearings, rollers, and bearing rings. Bearings are subjected to tremendous pressure and friction during operation, requiring bearing steel to have high and uniform hardness, wear resistance, and high elastic limit. The requirements for the uniformity of the chemical composition of bearing steel, the content and distribution of non-metallic inclusions, and the distribution of carbides are very strict, making it one of the most demanding steel grades in steel production.



Product List
Product Name: 

Gcr15 seamless steel pipe for bearings | Bearing steel pipe

Product Name: Precision bearing steel pipe | Seamless steel pip
Product Name: Cold rolled annealed bearing steel pipe | Seamless steel pipe
Product Name: Cold drawn bearing steel pipe | Seamless steel pipe
Product Name: National standard bearing steel pipe | seamless steel pipe
Product Name: Non standard bearing steel pipe | Seamless steel pipe



Parameter range
Outer diameterΦ6mm‑Φ219mm
Wall thickness0.5mm‑20mm
Standard length1‑12m， Customizable short and extended non ruler
Outer diameter accuracyMaximum ± 0.03mm
Executive StandardsASTM A295, DIN 17230, JIS G 4805, YB/T 4146
Non-standard customizationSpecial wall thickness, precision grinding of inner holes, precise tolerances, and specialized deep processing for bearings can all be customized



Common spot specification table
Outer diameter (mm)25
3035404550556065
Common wall thickness (mm)4、5、64、5、6、74、5、6、7、84、5、6、7、8、105、6、7、8、10、125、6、7、8、10、125、6、8、10、12、146、7、8、10、12、146、8、10、12、14、16
Outer diameter (mm)70
7580859095100110120
Common wall thickness (mm)6、8、10、12、14、167、8、10、12、15、188、10、12、14、16、208、10、12、14、16、208、10、12、15、18、2210、12、14、16、20、2510、12、15、18、20、2510、12、15、18、22、2812、15、18、20、25、30



Optional tolerance range

Tolerance controlOptional manufacturing process
Tolerance ≤ 0.05 mmCold rolling
Tolerance ≤ 0.10 mmCold rolling
Tolerance ≤ 0.30 mmCold drawing | Cold rolling
Tolerance ≤ 0.50 mmCold drawing | Hot rolling
Tolerance ≤ 1.00 mmHot rolling | Hot expanding



Hot rolled bearing tube tolerance (ring blank)
Outer Diameter (mm)Outer diameter deviation (mm)Wall thickness deviation
≤80±0.35+12%S /‑10%S
80‑100±0.50+12%S /‑10%S
＞100±0.5%×D+12%S /‑10%S

Cold drawn/cold-rolled precision bearing tube tolerance
Outer Diameter (mm)Outer diameter deviation (mm)Wall thickness deviation
≤63±0.10+10%S /‑8%S
63‑120±0.20+10%S /‑8%S

Geometric tolerance
ProjectIndicators
Ellipticity≤ 50% of outer diameter tolerance
Straightness≤ 1.0 mm/m



Optional delivery status
Oil removal from oil pipesAnnealing and straighteningSteel pipe corrosion prevention
Steel pipe threadingLength cut-to-lengthSteel pipe coating
Steel pipe capExquisite bundlingBeveling


Now ready to place an order:

You can view Ordering Matters | Payment Matters, or enter Submit Purchase | Contact Us

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Product Detail


Product Overview：

Bearing steel pipe is a type of seamless steel pipe used for manufacturing ordinary rolling bearing rings. The outer diameter of the steel pipe is 25-180mm, and the wall thickness is 3.5-20mm, divided into two types: ordinary precision and higher precision. Bearing steel is the steel used to manufacture ball bearings, rollers, and bearing rings. Bearings are subjected to tremendous pressure and friction during operation, requiring bearing steel to have high and uniform hardness, wear resistance, and high elastic limit. The requirements for the uniformity of the chemical composition of bearing steel, the content and distribution of non-metallic inclusions, and the distribution of carbides are very strict, making it one of the most demanding steel grades in steel production.



Product List
Product Name: 

Gcr15 seamless steel pipe for bearings | Bearing steel pipe

Product Name: Precision bearing steel pipe | Seamless steel pip
Product Name: Cold rolled annealed bearing steel pipe | Seamless steel pipe
Product Name: Cold drawn bearing steel pipe | Seamless steel pipe
Product Name: National standard bearing steel pipe | seamless steel pipe
Product Name: Non standard bearing steel pipe | Seamless steel pipe



Parameter range
Outer diameterΦ6mm‑Φ219mm
Wall thickness0.5mm‑20mm
Standard length1‑12m， Customizable short and extended non ruler
Outer diameter accuracyMaximum ± 0.03mm
Executive StandardsASTM A295, DIN 17230, JIS G 4805, YB/T 4146
Non-standard customizationSpecial wall thickness, precision grinding of inner holes, precise tolerances, and specialized deep processing for bearings can all be customized



Common spot specification table
Outer diameter (mm)25
3035404550556065
Common wall thickness (mm)4、5、64、5、6、74、5、6、7、84、5、6、7、8、105、6、7、8、10、125、6、7、8、10、125、6、8、10、12、146、7、8、10、12、146、8、10、12、14、16
Outer diameter (mm)70
7580859095100110120
Common wall thickness (mm)6、8、10、12、14、167、8、10、12、15、188、10、12、14、16、208、10、12、14、16、208、10、12、15、18、2210、12、14、16、20、2510、12、15、18、20、2510、12、15、18、22、2812、15、18、20、25、30



Optional tolerance range

Tolerance controlOptional manufacturing process
Tolerance ≤ 0.05 mmCold rolling
Tolerance ≤ 0.10 mmCold rolling
Tolerance ≤ 0.30 mmCold drawing | Cold rolling
Tolerance ≤ 0.50 mmCold drawing | Hot rolling
Tolerance ≤ 1.00 mmHot rolling | Hot expanding



Hot rolled bearing tube tolerance (ring blank)
Outer Diameter (mm)Outer diameter deviation (mm)Wall thickness deviation
≤80±0.35+12%S /‑10%S
80‑100±0.50+12%S /‑10%S
＞100±0.5%×D+12%S /‑10%S

Cold drawn/cold-rolled precision bearing tube tolerance
Outer Diameter (mm)Outer diameter deviation (mm)Wall thickness deviation
≤63±0.10+10%S /‑8%S
63‑120±0.20+10%S /‑8%S

Geometric tolerance
ProjectIndicators
Ellipticity≤ 50% of outer diameter tolerance
Straightness≤ 1.0 mm/m



Optional delivery status
Oil removal from oil pipesAnnealing and straighteningSteel pipe corrosion prevention
Steel pipe threadingLength cut-to-lengthSteel pipe coating
Steel pipe capExquisite bundlingBeveling


Now ready to place an order:

You can view Ordering Matters | Payment Matters, or enter Submit Purchase | Contact Us

Bearing steel tube
Process: Cold drawn and cold-rolled, spheroidized annealing
Surface: Fine and smooth without scratches or burrs
Ra：≤0.8‑1.6μm
Material: Common GCr15, GCr9
Specification: Outer diameter 10-180mm, wall thickness 1-20mm customizable
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Precision bright tube

Precision bright tube

Process: Cold Rolling + Bright Annealing Surface: Smooth Surface, Oxide - Free Finish Ra: 0.8 - 3.2μm (Customizable) Material: 20# (AISI 1020), 45# (AISI 1045), Q355B (EN S355JR) — Equivalent International Grades Available Specification: Specifications: Outer Diameter (OD): 6 - 219mm; Wall Thickness (WT): 1 - 20mm (Customizable per Requirement)
Small-diameter seamless steel pipe

Small-diameter seamless steel pipe

Process: Cold drawing and cold rolling, bright annealing Surface: Bright outer wall without oxide skin Ra：≤1.6‑3.2μm Material: Common 20 #, 45 # Q355B Specification: Outer diameter 4-60mm, wall thickness 0.8-12mm customizable
Thick-walled seamless steel pipe

Thick-walled seamless steel pipe

Process: Hot rolling, cold drawing, stress relief annealing Surface: The surface is regular and free of oxidation pits Ra：≤3.2‑12.5μm Material: Common 20 #, 45 # Q355B Specification: Outer diameter 16-325mm, wall thickness 8-65mm customizable
Alloy tube

Alloy tube

Process: Cold rolling and hot rolling+quenching and tempering annealing Surface: Smooth and rust free oxide skin Ra：≤3.2‑6.3μm Material: Common 16Mn, 40Cr, 12Cr1MoV Specification: Outer diameter 10-426mm, wall thickness 1.5-70mm customizable
Precision steel pipes for mechanical parts

Precision steel pipes for mechanical parts

Process: Cold drawing and cold rolling, bright annealing Surface: Smooth and burr free oxide skin Ra：≤0.8‑3.2μm Material: Common 20 #, 45 #, 40Cr, Q355B Specification: Outer diameter 6-180mm, wall thickness 1-18mm customizable
Seamless steel pipes for structural use

Seamless steel pipes for structural use

Process: Hot rolling, cold drawing, annealing and finishing Surface: flat without obvious pits or burrs Ra：≤6.3‑12.5μm Material: commonly used 20 #, 45 # Q355B Specification: Outer diameter 12-610mm, wall thickness 2.5-75mm customizable

Wanjintong Metal

China Steel Manufacturer

Over 20‑year experience, a world‑leading provider of steel manufacturing solutions

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