Production profile

Balls - Chrome Steel

Balls made of chrome steel are used mainly for bearings and many other industrial applications.

Their characteristic feature is smooth surface, high hardness and they are able to carry high loadings thanks to new through hardening technology.

The best quality steel is used for balls production coming only from verified source that meets highquality requirements. Small diameter balls are made of wire while large balls are made of forges.

To ensure high ball surface quality the newest heat treatment equipment is used with very precise atmosphere and temperature control system that assure identical hardness and proper microstructure of each single ball.

Manufacturing balls with strictly defined tolerance, surface precision and repeatable quality is guaranteedby statistical process control (SPC) introduced for all production process.

THP offers balls from 3 to 250 mm of diameter.

Material ISO/DIN ASTM AISI JIS
Chrome Steel 100Cr6 A295–46T 52100 SUJ2
Chemical composition
C Si Mn Cr Al P S
0,93÷1,05 0,15÷0,35 0,25÷0,45 1,35÷1,60 0,010÷0,050 0,020 0,008
Ni Cu Cu+Ni O2 H2 Ti Mo
0,30 0,25 0,50 10 ppm 1 ppm 30 ppm 0,10
SMALL AND MEDIUM DIAMETER BALLS
Ball type [mm] Ball type [inch] Weight [kg/1000 pcs]
3,969 5/32" 0,2543
4,5   0,3707
4,762 3/16" 0,4395
5   0,5086
5,556 7/32" 0,6979
6   0,8788
6,35 1/4" 1,042
7   1,3954
7,144 9/32" 1,483
7,938 5/16" 2,035
8   2,083
8,731 11/32" 2,708
9,525 3/8" 3,516
10   4,068
10,319 13/32" 4,469
11,112 7/16" 5,582
11,509 29/64" 6,2019
11,906 15/32" 6,867
12   7,026
12,303 31/64" 7,576
12,5   7,946
12,7 1/2" 8,333
13,494 17/32" 9,996
14,288 9/16" 11,87
15,081 19/32" 13,96
15,875 5/8" 16,28
16,669 21/32" 18,84
17,462 11/16" 21,662
18   23,7275
18,256 23/32" 24,753
19,05 3/4" 28,13
19,844 25/32" 31,791
20   32,5469
20,638 13/16" 35,762
21,431 27/32" 40,044
22   43,3199
22,225 7/8" 44,662

 

LARGE BALLS
Ball type [mm] Ball type [inch] Weight [kg/1000 pcs]
23,019 29/32 49,622
23,812 15/16 54,929
24,606 31/32 60,609
25   63,568
25,4 1" 66,67
26,988 1" 1/16 79,97
28,575 1" 1/8 94,9
30,162 1" 3/16 111,6
31,75 1" 1/4 130,2
33,338 1" 5/16 150,7
34,925 1" 3/8 173,3
36,512 1" 7/16 198
38,1 1" 1/2 225
40   260,375
41,275 1" 5/8 286,1
42,862 1" 11/16 320,359
44,45 1" 3/4 357,301
45   370,729
47,625 1" 7/8 439,465

 

LARGE BALLS
Ball type [mm] Ball type [inch] Weight [kg/1000 pcs]
50,8 2" 533,348
52,387 2" 1/16 584,911
53,975 2" 1/8 639,73
57,15 2" 1/4 759,396
60,325 2" 3/8 893,123
63,5 2" 1/2 1042
66,675 2" 5/8 1206
69,85 2" 3/4 1386
76,2 3" 1800
79,375 3" 1/8 2035
80   2083
90   2966
100   4069
108   5126
110   5416
120   7031
130   8938
150   13733
180   23727
200   32547
250   63578

 

The following grades are available

BALL GRADES
5 3 mm  -  9,525 mm (3/8")
10 3 mm  -  22,225 mm (7/8")
16 3 mm  -  26,988 mm (1 1/16")
20-28 3 mm  -  38,000 mm
40 3 mm  -  50,000 mm
100 3 mm  -  100,000 mm
200 3 mm  -  250,000 mm

 

 

 

Needle Rollers - Chrome Steel

The main application of Needle Rollers is bearing and automotive industry. These products are made of one steel brand – chrome steel (100Cr6) ensures high customer requirements.

Needle rollers are also carrying elements of bearings and needle assemblies applied in power transmission systems.

THP offers needle rollers with spherical faces (Type A) and flat faces (Type B).

   
 Typ A   Typ B
 Diameter Dw
[mm]
Length Lw [mm]  Mass 1000 szt.
[kg]
 Type A [mm]  Type B [mm]
 2    6,8  0,166
 2  7,8    0,184
 2    8,8  0,215
 2    9,05  0,221
 2  9,3    0,221
 2  9,4    0,223
 2  9,8    0,233
 2  10,2    0,243
 2  10,4    0,247
 2  10,8    0,257
 2  11,2    0,266
 2    11,7  0,289
 2  11,8    0,282
 2  12,8    0,306
 2  13,8    0,330
 2  15,8    0,379
 2  17,8    0,428
 2  19,8    0,477
 2,5  7,8    0,281
 2,5  9,8    0,358
 2,5    9,8  0,374
 2,5    17,8  0,679
 2,5  19,8    0,739
 3   13,8  0,758
 3,5  15,8    1,140
 3,5  17,8    1,290
 3,5  19,8    1,440
 4   11,8  1,152
 4    15  1,465
 4    23,8  2,324
 4    29,8  2,910
 4  32    3,065
 5   19,8  3,021
 5  23,8    3,531
 5  25,8    3,836
 5  29,8    4,447
 6   17,8  3,911
 6  21,8    4,578
 6   21,8  4,789
 6,35   21,59  5,312