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The Timken HJ-2RS Series of cylindrical roller radial bearings are engineered to deliver reliable radial load support in applications demanding enhanced sealing and durability. These bearings feature a one-piece channel-shaped outer ring crafted from bearing-grade steel, coupled with double-lip contact seals (designated by “.2RS”) on both sides to effectively shield the internal components from contaminants and retain lubrication—ensuring extended service life and performance stability
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A notable entry in this series, the HJ-223020.2RS, demonstrates their engineering strengths. With a bore (Fw) of 34.925 mm (1.375 in), an outer diameter (D) of 47.625 mm (1.875 in), and a width (C) of 31.75 mm (1.25 in), this model combines compact sizing with robust load-handling ability. It boasts a basic dynamic radial load rating (Cr) of 6,290 lbf, a basic static load rating (Co) of 8,430 lbf, and a limiting speed of 2,800 rpm
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Across the HJ-2RS lineup, sizes vary from small to mid-range bores (starting at 15.875 mm) up to larger dimensions (e.g., 57.15 mm and beyond), offering designers flexibility to match bearing selection to application demands
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. Load capacities scale accordingly, with dynamic and static ratings increasing with bearing size, while maximum allowable speeds decrease—especially for greased configurations
These bearings are manufactured to high engineering tolerances—commonly to ISO Normal class, with tighter P6 or P5 tolerances available upon request—ensuring precision fit and stable operation under demanding conditions
. Installation recommendations further enhance performance: a clearance fit is suggested when the housing remains stationary relative to the load, and a tight or transition fit when the housing rotates relative to the load
The Timken Company
In summary, the Timken HJ-2RS cylindrical roller radial bearings offer a well-balanced combination of robust load capacity, protective sealing, precise engineering tolerances, and flexible fit options—making them an excellent choice for environments requiring reliable, high-performance radial bearings.
| Bearing* Designation | Fw Bore | D Outside Diameter | C Width | Basic Dynamic Cr | Basic Static CO | §Limiting Speed | ra* Housing Fillet | Part Number | inch | mm | inch | mm | inch | mm | lbf | lbf | lbf | rpm | inch | mm |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
0.6250 |
15,875 |
1.1250 |
28,570 |
1.000 |
25,40 |
2 970 |
3 980 |
4 150 |
6 100 |
0.025 |
0,6 |
|
0.7500 |
19,050 |
1.2500 |
31,750 |
1.000 |
25,40 |
3 170 |
4 250 |
4 680 |
5 100 |
0.04 |
1,0 |
|
0.8750 |
22,225 |
1.3750 |
34,925 |
1.000 |
25,40 |
3 540 |
4 750 |
5 600 |
4 400 |
0.04 |
1,0 |
|
1.0000 |
25,400 |
1.5000 |
38,100 |
1.000 |
25,40 |
3 870 |
5 200 |
6 520 |
3 800 |
0.04 |
1,0 |
|
1.1250 |
28,575 |
1.6250 |
41,275 |
1.250 |
31,75 |
5 740 |
7 700 |
11 200 |
3 400 |
0.04 |
1,0 |
|
1.2500 |
31,750 |
1.7500 |
44,450 |
1.250 |
31,75 |
5 900 |
7 920 |
11 900 |
3 100 |
0.04 |
1,0 |
|
1.3750 |
34,925 |
1.8750 |
47,625 |
1.250 |
31,75 |
6 290 |
8 430 |
13 300 |
2 800 |
0.04 |
1,0 |
|
1.5000 |
38,100 |
2.0625 |
52,388 |
1.250 |
31,75 |
7 400 |
9 930 |
14 800 |
2 500 |
0.06 |
1,5 |
|
1.6250 |
41,275 |
2.1875 |
55,562 |
1.250 |
31,75 |
7 600 |
10 200 |
15 700 |
2 400 |
0.06 |
1,5 |
|
1.7500 |
44,450 |
2.3125 |
58,738 |
1.250 |
31,75 |
7 790 |
10 500 |
16 600 |
2 200 |
0.06 |
1,5 |
|
2.0000 |
50,800 |
2.5625 |
65,088 |
1.250 |
31,75 |
8 410 |
11 300 |
19 100 |
1 900 |
0.06 |
1,5 |
|
2.2500 |
57,150 |
3.0000 |
76,200 |
1.750 |
44,45 |
14 800 |
19 900 |
36 200 |
1 700 |
0.06 |
1,5 |
|
2.5000 |
63,500 |
3.2500 |
82,550 |
1.750 |
44,45 |
16 000 |
21 500 |
41 300 |
1 500 |
0.08 |
2,0 |
|
2.7500 |
69,850 |
3.5000 |
88,900 |
1.750 |
44,45 |
16 700 |
22 300 |
44 800 |
1 400 |
0.08 |
2,0 |
|
3.0000 |
76,200 |
3.7500 |
95,250 |
1.750 |
44,45 |
17 700 |
23 800 |
49 900 |
1 300 |
0.08 |
2,0 |
|