Also known as, Bearing Steel Balls, they are the most critical and specialized element of bearing. They are produced using extremely sophisticated and specialized machines.

Starting from the rigorous testing of the wire for all necessary parameters, balls are produced in specially designed machines called Headder, Flasher, Grinder and Lapper. Heat treatment is one of the most critical operations which gives required strength & hardness. It makes the balls tough and wear resistant. Apart from intermediate vigil at all operations, for all quality parameters, finished products are also tested with extremely sophisticated equipments to ensure right quality of DSP Balls.

 

 
 

 

 

 

 

 

TENSILE STRENGTH
228 kgf/mm2
MODULUS OF ELASTICITY
20750 kgf/mm2
SPECIFIC WEIGHT
7.83 kgf/cm3
HARDNESS
BETWEEN 58-65 HRC
( measured on parrel flats)

 

 

 

 

 

 

COMPONENT
C
Si
Mn
Cr
P & S
CONTENT (%)
.98-.1%
0.15-0.30
0.15-0.45
1.3 -1.6
0.025 MAX

(also known as High Carbon Chrome Steel)

 

 

 

 

 

 

DSP-BALLS: PRODUCTION LINES OF PRECISION BALLS

Production lines for Precision Balls are stream-lined with optimum combinations of various processes. The process given below illustrate how the high Quality of High Carbon High Chrome Steel balls are achieved


Raw Material

Is thoroughly inspected for Physical & Chemicals properties .


Heading

Wire coils are cold forged into spherical blanks, for compact structure, in semi-automatic machines known as single stroke Headers.


Flashing / Filing

Die-marks on poles and equator of headed blanks are then removed by grinding them between hardened plates of special composition, known as Flashing / Filing.


Heat Treatment

Balls are heated in controlled environment to critical temperatures & quenched to attain due hardness. Balls are then tempered to close limits.


Grinding

Balls are ground to close tolerances in special machines with different grades of abrasives for final lapping processes.


Lapping

Balls are lapped for final parameters of size, sphericity , lot variation and to surface quality in a series of specially designed machines known as Lappers.


Cleaning

Balls are then prepared for macro inspection by thorough cleaning in a especially designed cleaning machine.


Macro Inspection

Whole production of DSP-BALLS goes through 100 % inspection by well trained inspectors, under suitable magnification and light, for all surface defects.


Super finishing

Balls passed through macro inspection goes under super finishing and all Specified parameters are maintained in required tolerances as per grade to be prepared .


Guarantee Test

 During production balls are inspected at every stage for fixed stage specifications, and the material is unloaded from the machines only on qualifying limits. Finally, during super finishing, parameters of geometry, lot variation and surface roughness etc. are re-ensured and detailed inspection report is prepared and supplied to the customer on demand.


Packing

Rust Prevention Oil is applied on the balls . They are then double packed in polythene bags, before being packed in Cardboard boxes and wooden cases. Labels carrying details of sizes, quality are properly pasted.


Cargo to Export

Balls so packed are ready for Export to customers.


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