Quick Contact
The X-Type, or 4-point contact, ball bearing is ideal for moment loading. X-Type bearings are designed with gothic arch raceways creating 4 contact points between the balls and the raceways. This design is excellent for moment loading and reversing axial loading. The X-Type bearing can be used for other light loading conditions, but is not recommended in place of the C- or A-Type bearing for pure radial loads. Contact Silverthin™ for information on combined load and limiting speeds.
| Radial | Axial | Moment | Reversing Axial | Combined Radial Thrust |
|---|---|---|---|---|
| Poor | Good, | Excellent | Excellent | Poor |
Brass; snapover separator standard
5/32" balls
- Load capacities are not additive
- The maximum shaft or housing fillet radius that the bearing corners will clear for this series is 0.8mm
- Race Width Tolerance: +0.000 -0.127mm
| SILVERTHIN PART NUMBER |
DIMENSION IN MILLIMETERS | CAPACITIES IN NEWTONS / N-M | APPROX WEIGHT KG |
||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| BORE | OUTSIDE DIA |
LAND DIA |
LAND DIA |
RADIAL | THRUST | MOMENT | |||||
| B | D | L1 | L2 | STATIC | DYN | STATIC | DYN | STATIC | DYN | ||
| SM02508XP0 | 25.000 | 41 | 30.9 | 35.1 | 3,270 | 3,245 | 7,430 | 4,605 | 50 | 40 | 0.06 |
| SM05008XP0 | 50.000 | 66 | 55.9 | 60.1 | 5,450 | 4,515 | 13,610 | 6,540 | 460 | 100 | 0.08 |
| SM06008XP0 | 60.000 | 76 | 65.9 | 70.1 | 6,425 | 4,960 | 16,100 | 7,295 | 220 | 125 | 0.09 |
| SM07008XP0 | 70.000 | 86 | 75.9 | 80.1 | 7,430 | 5,380 | 18,570 | 8,030 | 290 | 160 | 0.10 |
| SM08008XP0 | 80.000 | 96 | 85.9 | 90.1 | 8,430 | 5,805 | 21,040 | 8,720 | 370 | 190 | 0.12 |
| SM09008XP0 | 90.000 | 106 | 95.9 | 100.1 | 9,410 | 6,185 | 23,530 | 9,410 | 460 | 230 | 0.13 |
| SM10008XP0 | 100.000 | 116 | 105.9 | 110.1 | 10,385 | 6,560 | 26,000 | 10,050 | 560 | 265 | 0.14 |
| SM11008XP0 | 110.000 | 126 | 115.9 | 120.1 | 11,385 | 6,940 | 28,465 | 10,695 | 670 | 305 | 0.15 |
| SM12008XP0 | 120.000 | 136 | 125.9 | 130.1 | 12,365 | 7,295 | 30,960 | 11,300 | 790 | 350 | 0.16 |
| SM13008XP0 | 130.000 | 146 | 135.9 | 140.1 | 13,365 | 7,630 | 33,425 | 11,875 | 925 | 395 | 0.17 |
| SM14008XP0 | 140.000 | 156 | 145.9 | 150.1 | 14,365 | 7,960 | 35,895 | 12,455 | 1,065 | 440 | 0.18 |
| SM15008XP0 | 150.000 | 166 | 155.9 | 160.1 | 15,345 | 8,295 | 38,385 | 13,035 | 1,215 | 490 | 0.20 |
| SM16008XP0 | 160.000 | 176 | 165.9 | 170.1 | 16,345 | 8,605 | 40,855 | 13,590 | 1,375 | 545 | 0.20 |
| SM17008XP0 | 170.000 | 186 | 175.9 | 180.1 | 17,325 | 8,920 | 43,325 | 14,120 | 1,545 | 595 | 0.21 |
| SM18008XP0 | 180.000 | 196 | 185.9 | 190.1 | 18,325 | 9,230 | 45,815 | 14,655 | 1,720 | 650 | 0.22 |
| SM19008XP0 | 190.000 | 206 | 195.9 | 200.1 | 19,060 | 9,450 | 47,660 | 15,055 | 1,890 | 700 | 0.23 |
| SM20008XP0 | 200.000 | 216 | 205.9 | 210.1 | 20,060 | 9,720 | 50,130 | 15,570 | 2,085 | 760 | 0.23 |
| SM25008XP0 | 250.000 | 266 | 255.9 | 260.1 | 25,000 | 11,120 | 62,515 | 18,035 | 3,225 | 1,075 | 0.28 |
| SM30008XP0 | 300.000 | 316 | 305.9 | 310.1 | 29,955 | 12,365 | 74,905 | 20,350 | 4,615 | 1,430 | 0.33 |
| SM32008XP0 | 320.000 | 336 | 325.9 | 330.1 | 31,935 | 12,475 | 79,840 | 21,240 | 5,240 | 1,580 | 0.36 |
| SM34008XP0 | 340.000 | 356 | 345.9 | 350.1 | 33,915 | 13,235 | 84,800 | 22,105 | 5,860 | 1,730 | 0.38 |
| SM36008XP0 | 360.000 | 376 | 365.9 | 370.1 | 35,675 | 13,700 | 89,140 | 22,840 | 6,560 | 1,890 | 0.40 |
Brass; snapover separator standard
1/4" balls
- Load capacities are not additive
- The maximum shaft or housing fillet radius that the bearing corners will clear for this series is 1.5mm
- Race Width Tolerance: +0.000 -0.127mm
| SILVERTHIN PART NUMBER |
DIMENSION IN MILLIMETERS | CAPACITIES IN NEWTONS / N-M | APPROX WEIGHT KG |
||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| BORE | OUTSIDE DIA |
LAND DIA |
LAND DIA |
RADIAL | THRUST | MOMENT | |||||
| B | D | L1 | L2 | STATIC | DYN | STATIC | DYN | STATIC | DYN | ||
| SM08013XP0 | 80.000 | 106 | 89.7 | 96.3 | 13,320 | 11,120 | 33,270 | 16,215 | 620 | 390 | 0.26 |
| SM09013XP0 | 90.000 | 116 | 99.7 | 106.3 | 15,210 | 12,010 | 38,030 | 17,725 | 785 | 465 | 0.29 |
| SM10013XP0 | 100.000 | 126 | 109.7 | 116.3 | 16,480 | 12,545 | 41,190 | 18,680 | 930 | 530 | 0.32 |
| SM11013XP0 | 110.000 | 136 | 119.7 | 126.3 | 18,390 | 13,365 | 45,950 | 20,105 | 1,130 | 615 | 0.35 |
| SM12013XP0 | 120.000 | 146 | 129.7 | 136.3 | 19,660 | 13,880 | 49,130 | 21,015 | 1,305 | 695 | 0.38 |
| SM13013XP0 | 130.000 | 156 | 139.7 | 146.3 | 20,930 | 14,365 | 52,285 | 21,905 | 1,495 | 770 | 0.41 |
| SM14013XP0 | 140.000 | 166 | 149.7 | 156.3 | 22,820 | 15,145 | 57,045 | 23,220 | 1,745 | 870 | 0.44 |
| SM15013XP0 | 150.000 | 176 | 159.7 | 166.3 | 24,085 | 15,610 | 60,225 | 24,065 | 1,965 | 955 | 0.46 |
| SM16013XP0 | 160.000 | 186 | 169.7 | 176.3 | 25,355 | 16,080 | 63,385 | 24,910 | 2,195 | 1,045 | 0.49 |
| SM17013XP0 | 170.000 | 196 | 179.7 | 186.3 | 27,265 | 16,770 | 68,145 | 26,155 | 2,495 | 1,150 | 0.52 |
| SM18013XP0 | 180.000 | 206 | 189.7 | 196.3 | 28,535 | 17,215 | 71,300 | 26,955 | 2,755 | 1,245 | 0.55 |
| SM19013XP0 | 190.000 | 216 | 199.7 | 206.3 | 29,800 | 17,660 | 74,480 | 27,735 | 3,025 | 1,345 | 0.58 |
| SM20013XP0 | 200.000 | 226 | 209.7 | 216.3 | 31,690 | 18,325 | 79,240 | 28,910 | 3,375 | 1,465 | 0.61 |
| SM25013XP0 | 250.000 | 276 | 259.7 | 266.3 | 39,300 | 20,770 | 98,255 | 33,360 | 5,170 | 2,050 | 0.75 |
| SM30013XP0 | 300.000 | 326 | 309.7 | 316.3 | 46,280 | 22,820 | 115,670 | 37,210 | 7,240 | 2,680 | 0.89 |
| SM32013XP0 | 320.000 | 346 | 329.7 | 336.3 | 49,440 | 23,730 | 123,610 | 38,900 | 8,230 | 2,965 | 0.95 |
| SM34013XP0 | 340.000 | 366 | 349.7 | 356.3 | 52,620 | 24,595 | 131,525 | 40,520 | 9,285 | 3,255 | 1.01 |
| SM36013XP0 | 360.000 | 386 | 369.7 | 376.3 | 55,780 | 25,445 | 139,445 | 42,145 | 10,405 | 3,560 | 1.06 |
Brass; snapover separator standard
3/8" balls
- Load capacities are not additive
- The maximum shaft or housing fillet radius that the bearing corners will clear for this series is 1.5mm
- Race Width Tolerance: +0.000 -0.127mm
| SILVERTHIN PART NUMBER |
DIMENSION IN MILLIMETERS | CAPACITIES IN NEWTONS / N-M | APPROX WEIGHT KG |
||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| BORE | OUTSIDE DIA |
LAND DIA |
LAND DIA |
RADIAL | THRUST | MOMENT | |||||
| B | D | L1 | L2 | STATIC | DYN | STATIC | DYN | STATIC | DYN | ||
| SM11020XP0 | 110.000 | 150 | 125.0 | 135.0 | 28,535 | 24,175 | 71,300 | 35,315 | 1,855 | 1,180 | 0.94 |
| SM12020XP0 | 120.000 | 160 | 135.0 | 145.0 | 31,380 | 25,530 | 78,440 | 37,630 | 2,195 | 1,340 | 1.01 |
| SM13020XP0 | 130.000 | 170 | 145.0 | 155.0 | 32,805 | 26,090 | 82,000 | 38,765 | 2,460 | 1,470 | 1.08 |
| SM14020XP0 | 140.000 | 180 | 155.0 | 165.0 | 35,650 | 27,375 | 89,140 | 40,990 | 2,850 | 1,645 | 1.15 |
| SM15020XP0 | 150.000 | 190 | 165.0 | 175.0 | 37,075 | 27,890 | 92,695 | 42,080 | 3,150 | 1,780 | 1.20 |
| SM16020XP0 | 160.000 | 200 | 175.0 | 185.0 | 39,920 | 29,135 | 99,835 | 44,190 | 3,595 | 1,965 | 1.30 |
| SM17020XP0 | 170.000 | 210 | 185.0 | 195.0 | 42,790 | 29,645 | 106,950 | 46,280 | 3,930 | 2,115 | 1.40 |
| SM18020XP0 | 180.000 | 220 | 195.0 | 205.0 | 44,215 | 30,825 | 110,535 | 47,305 | 4,420 | 2,310 | 1.50 |
| SM19020XP0 | 190.000 | 230 | 205.0 | 215.0 | 47,060 | 31,960 | 117,670 | 49,305 | 4,940 | 2,520 | 1.50 |
| SM20020XP0 | 200.000 | 240 | 215.0 | 225.0 | 48,485 | 32,450 | 121,230 | 50,305 | 5,335 | 2,680 | 1.60 |
| SM25020XP0 | 250.000 | 290 | 265.0 | 275.0 | 59,890 | 36,585 | 149,740 | 57,915 | 8,085 | 3,705 | 2.10 |
| SM30020XP0 | 300.000 | 340 | 315.0 | 325.0 | 71,300 | 40,390 | 178,275 | 65,050 | 11,410 | 4,850 | 2.30 |
| SM32020XP0 | 320.000 | 360 | 335.0 | 345.0 | 75,595 | 41,720 | 188,975 | 67,630 | 12,850 | 5,325 | 2.42 |
| SM34020XP0 | 340.000 | 380 | 355.0 | 365.0 | 79,865 | 43,035 | 199,670 | 70,145 | 14,375 | 5,810 | 2.54 |
| SM36020XP0 | 360.000 | 400 | 375.0 | 385.0 | 84,155 | 44,300 | 210,370 | 72,635 | 15,985 | 6,315 | 2.70 |
