Bearing Steel

Bearing steel features high hardness, wear-resistance, toughness, high elastic limit and fatigue strength. It is also used to make tools such as: punch die, measuring gauges and shaft rings, hot-forged straight rods, polishing bar and steel balls made of security level bearing steel wire in addition to rotating components like bearing or bearing ring. Standard chemical composition includes 0.9~1.2% carbon, 0.2~0.6% Si., <0.5% or 0.9~1.2% Mn., 1.0~1.5% Cr. and a little P. and S.(0.03%),…etc. Although bearing steel has similar composition as alloy tool steel does, it requires special methods of steel-making, high-temp. machining and heat-treatment depending on its purity.

Used to produce ball-bearing, roller bearing that are mounted to fix mechanical parts. Chemical composition includes carbon, Cr., Mn., Mo., Si and a little.Bearing steel can be categorized in 5 groups :

 

Product Applications

Bearing steel is a steel grade used to make rolling bearing balls, rollers and sleeves. It can also be used to make precision measuring tools, cold punching dies, machine tool screws, such as punching dies, measuring tools, taps and precision parts of diesel oil pumps. Bearing steel is the steel used to make balls, rollers and bearing rings.

SUJ2

SUJ2 is alloy steel that contains high carbon and high Cr. a

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SUJ2

SUJ2 is alloy steel that contains high carbon and high Cr. and has good general mechanical performances. Equalized high hardness, good wear-resistance, strength of contact fatigue after hardening and tempering. Good thermal machinability can be obtained through spheroid annealing.

International denotation: SUJ2 (JIS Japan), 52100 (SAE/AISI USA), 100Cr6 / 1.3505 (DIN German), GCr15 (GB China), SUJ2 (CNS Taiwan).

Application:
Precision tool, instrument, tester, cutter, cutter, roller, sample mold, punch, cold cutter, scissors, screw die Etc.

Heat treatment:
Normalization: 850-870 Air cooling
annealing: 750-790 Slow
quenching: 810-850 Rapid cooling and
tempering: 150-190 Air
annealing hardness: HRC 8-15
Application hardness: Quenching + tempering HRC 59-64

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100Cr6

100Cr6 can acquire equalized high hardness, good wear-resist

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100Cr6

100Cr6 can acquire equalized high hardness, good wear-resistance, strength of contact fatigue after hardening and tempering. Good thermal machinability can be obtained through spheroid annealing. 100Cr6 is used to produce combustion, electrical motorcycle, machinery casting, trailer, steel rolling equipment, boring machine, rail vehicle and the steel ball for the transmission shaft of mining machinery, roller and bushing.

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Bearing Products

Used to produce ball-bearing, roller bearing that are mounte

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Bearing Products

Used to produce ball-bearing, roller bearing that are mounted to fix mechanical parts.

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Ball screw

Ball screw is the most commonly used transmission element in

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Ball screw

Ball screw is the most commonly used transmission element in tool machinery and precision machinery. Its main function is to convert rotary motion into linear motion, or convert torque into axial repetitive force. It also has high precision, reversibility and high Features of efficiency. Because of its small frictional resistance , ball screws are widely used in various industrial equipment and precision instruments.

The ball screw consists of a screw , a nut , a steel ball, a pre-compression piece, a reverser, and a dustproof device. Its function is to convert rotary motion into linear motion, which is the further extension and development of Akem screw. The important significance of this development is to change the bearing from sliding motion to rolling motion.

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Metric Machine Taps

A tap is a tool for processing internal threads. According t

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Metric Machine Taps

A tap is a tool for processing internal threads. According to the shape, it can be divided into spiral flute taps, blade inclination taps, straight flute taps and pipe thread taps. According to the use environment, it can be divided into hand taps and machine taps. For metric, American, and British taps. Taps are the most mainstream processing tools used by manufacturing operators when tapping.

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Steel data

Standard Code Spec No. Material No. Mark
CNS 3014 SUJ2
JIS 4805 SUJ2
ASTM A295 52100
GB 18254 GCr15
DIN 17230 1.3505 100Cr6
(C)% (Si)% (Mn)% (P)% (S)% (Ni)% (Cr)% (Mo)% (Cu)% (Al)% Hardness(HB)
0.95~1.1 0.15~0.35 ≦ 0.5 ≦ 0.025 ≦ 0.025 ≦ 0.25 1.3~1.6 ≦ 0.08 ≦ 0.25 ≦ 201
0.95~1.1 0.15~0.35 ≦ 0.5 ≦ 0.025 ≦ 0.025 ≦ 0.25 1.3~1.6 ≦ 0.08 ≦ 0.25 ≦ 201
0.98~1.1 0.15~0.35 0.25~0.45 ≦ 0.025 ≦ 0.025 ≦ 0.25 1.3~1.6 ≦ 0.1 ≦ 0.35 ≦ 207
0.95~1.05 0.15~0.35 0.25~0.45 ≦ 0.025 ≦ 0.025 ≦ 0.3 1.4~1.65 ≦ 0.1 ≦ 0.25 179~207
0.93~1.05 0.15~0.35 0.25~0.45 ≦ 0.025 ≦ 0.015 1.35~1.6 ≦ 0.3 ≦ 0.05 ≦ 207