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

DNT Tools is professional and leading tool manufacturer from China. own drop forgging workshop. offer custom new tools service and product forgging service,OEM Service

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?

What's a Basic components of a hydraulic system | DNT Auto Tools FAQ

A hydraulic puller system needs 3 basic components to function: 

Basic components of a hydraulic system 

1.Puller

2. Hydraulic Cylinde

3. Pump (Air, hand, self-contained or electric) 

The basic operation of a hydraulic puller system makes use of a cylinder that is fitted into the  body of the puller. The cylinder replaces the center bolt function of a manual puller. 

 The technician inspects the component to be removed and selects the proper size puller. Safety  precautions are taken in into consideration as the technician secures the jaws of the puller on the  application to keep the system in place. 

 Instead of using a wrench to move the center bolt forward and backward as one would with a  manual puller, a pump is used as a power source. The pump regulates the flow of hydraulic fluid. 

As the hydraulic fluid pressure builds up, the pressure moves the cylinder forward pushing the  ram of the puller to make contact with the shaft of the component being removed.

What's a Basic components of a hydraulic system | DNT Auto Tools FAQ: What's a Basic components of a hydraulic system