What are bearing pullers made of? | DNT Auto Tools FAQ

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All puller from DNT Tools is made of Alloy Steel, and drop forgging product to ensure high quality and surface. suitable to top market business in Europe and american 

Material: GB 40CR Alloy steel(SAE-AISI 5140 steel )


Chemical composition of 40Cr steel

 

rade	C	Si	Mn	Cr	Ni(≤)	Cu(≤)	P(≤)	S(≤)
40Cr	0.37-0.44	0.17-0.37	0.5-0.8	0.8-1.0	0.3	0.03	0.035	0.035

Physical property of 40Cr



Sample blank size (mm):25


The first quenching heating temperature (ºC):850; coolant: Oil


Second quenching heating temperature (ºC):-


Tempering heating temperature (ºC):520;


Tensile strength (σb/MPa): ≥980


The yield point (σs/MPa): ≥785


Elongation (δ5/%): ≥9


Section shrinkage (ψ/%): ≥45


gear puller
40CR alloy steel is used to produce bearing pullers because it provides them with a very strong structure that is able to withstand wear.


Bearing pullers need to be able to remove bearings, gears or pulleys without becoming easily worn or damaged.


2. Heat Treated

heat treated



Bearing pullers are heat treated for increased wear and strength.


3. Chrome plated



Chrome plated


The bearing pullers are chrome plated to resist corrosion. Corrosion is when iron reacts with oxygen and forms a reddish-brown oxide that we know as rust. When steel corrodes it deteriorates and eventually decays over time.

What are bearing pullers made of? | DNT Auto Tools FAQ: What are bearing pullers made of?