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Single direction thrust ball bearings
Single direction thrust ball bearings
Single direction thrust ball bearings

Thrust Ball Bearings

Single direction thrust ball bearings

Description：

Single direction thrust ball bearings are a type of ball bearing specifically designed to accommodate axial loads in one direction. They consist of a shaft washer, a housing washer, and a set of ball bearings positioned between them. The shaft washer and housing washer have raceways on their surfaces to allow the balls to rotate freely.

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Product Detail

Boundary dimensions
(mm)		 Load rating
(KN)		 Bearing numbers Limiting speed
(r/min)		 Minimum load factors
A		 Abutment and fillet dimensions
(mm)		 Mass
(approx.)
(flat)
kg
d d1
min		 D D1
min		 H C H1 r1,2
min		 S R Cr Cor Flat housing washer Sphered housing washer Grease Oil da
min		 Da
max		 ra
max
10 11.0 24 24 9 – – 0.3 – – 9.32 8.11 51100 – 7000 9500 0.0012 19 15 0.3 0.0188
10 12.0 26 26 11 – 11.6 0.6 8.5 22 12.70 10.40 51200 53200 6000 8000 0.0018 20 16 0.6 0.0282
12 13.0 26 26 9 – – 0.3 – – 9.67 9.49 51101 – 6700 9000 0.0014 21 17 0.3 0.0210
12 14.0 28 28 11 3.5 11.4 0.6 11.5 25 13.20 12.30 51201 53201 6000 8000 0.0012 22 18 0.6 0.0319
15 16.0 28 28 9 – – 0.3 – – 10.50 12.00 51102 – 6300 8500 0.0012 23 20 0.3 0.0219
15 17.0 32 32 12 4.0 13.3 0.6 12.0 28 13.40 14.50 51202 53202 5300 7000 0.0038 25 22 0.6 0.0430
17 18.0 30 30 9 – – 0.3 – – 10.80 13.40 51103 – 6300 8500 0.0014 25 22 0.3 0.0246
17 19.0 35 35 12 4.0 13.2 0.6 16.0 32 17.20 18.80 51203 53203 5000 6700 0.0047 28 24 0.6 0.0503
20 21.0 35 35 10 – – 0.3 – – 15.00 19.70 51104 – 5600 7500 0.0033 29 26 0.3 0.0371
20 22.0 40 40 14 5.0 14.7 0.6 18.0 36 21.10 23.90 51204 53204 4500 6000 0.0085 32 28 0.6 0.0746
20 22.0 47 47 18 – – 1.0 – – 34.30 36.30 51304 – – – – – – – 0.1490
25 25.2 45 45 14 – – 0.6 – – 14.80 29.70 F-2905 – – – – – – – 0.0919
25 26.0 42 42 11 – – 0.6 – – 15.40 23.90 51105 – 4800 6300 0.0033 35 32 0.6 0.0554
25 27.0 47 47 15 5.5 16.7 0.6 19.0 40 27.70 36.30 51205 53205 4000 5300 0.015 38 34 0.6 0.1070
25 27.0 52 52 18 – 19.8 1.0 21.0 45 35.70 42.10 51305 53305 3400 4500 0.018 41 36 1.0 0.1660
25 27.0 60 60 24 – 26.4 1.0 19.0 50 55.40 59.80 51405 53405 2600 3600 0.048 46 39 1.0 0.3370
30 30.2 50 50 14 – – 0.6 – – 19.10 40.10 F-2906 – – – – – – – 0.1060
30 32.0 47 47 11 – – 0.6 – – 16.60 29.40 51106 – 4500 6000 0.0067 40 37 0.6 0.0692
30 32.0 52 52 16 5.5 17.8 0.6 22.0 45 29.30 43.80 51206 53206 3600 4800 0.013 43 39 0.6 0.1340
30 32.0 60 60 21 7.0 22.6 1.0 22.0 50 47.10 57.20 51306 53306 2800 3800 0.026 48 42 1.0 0.2570
30 32.0 70 70 28 – 30.1 1.0 20.0 56 72.20 81.00 51406 53406 2000 3000 0.097 54 46 1.0 0.5230
35 35.2 55 55 16 – – 0.6 – – 22.90 49.40 F-2907 – – – – – – – 0.1320
35 37.0 52 52 12 – – 0.6 – – 19.10 35.90 51107 – 4300 5600 0.0086 45 42 0.6 0.0806
35 37.0 62 62 18 7.0 19.9 1.0 24.0 50 39.10 58.60 51207 53207 3000 4000 0.028 51 46 1.0 0.2090
Boundary dimensions
(mm)		 Load rating
(KN)		 Bearing numbers Limiting speed
(r/min)		 Minimum load factors
A		 Abutment and fillet dimensions
(mm)		 Mass
(approx.)
(flat)
kg
d d1
min		 D D1
min		 H C H1 r1,2
min		 S R Cr Cor Flat housing washer Sphered housing washer Grease Oil da
min		 Da
max		 ra
max
35 37.0 68 68 24 7.5 25.6 1.0 24.0 56 55.40 73.90 51307 53307 2400 3400 0.048 55 48 1.0 0.3710
35 37.0 80 80 32 – 34.0 1.1 23.0 64 86.40 102.00 51407 53407 1800 2600 0.15 62 53 1.0 0.7710
40 42.0 60 60 13 – – 0.6 – – 26.90 51.20 51108 – 3800 5000 0.015 52 48 0.6 0.1160
40 40.2 60 60 16 – – 0.6 – – 24.10 55.60 F-2908 – – – – – – – 0.1560
40 42.0 68 68 19 7.0 20.3 1.0 28.5 56 47.00 74.10 51208 53208 2800 3800 0.058 57 51 1.0 0.2620
40 42.0 78 78 26 8.5 28.5 1.0 28.0 64 68.90 95.80 51308 53308 2000 3000 0.077 63 55 1.0 0.5360
40 42.0 90 90 36 12.0 38.2 1.1 26.0 72 112.00 133.00 51408 53408 1700 2400 0.26 70 60 1.0 1.0900
45 45.2 68 68 16 – – 0.6 – – 21.40 55.10 F-2909 – – – – – – – 0.2000
45 47.0 65 65 14 – – 0.6 – – 27.90 57.50 51109 – 3400 4500 0.019 57 53 0.6 0.1400
45 47.0 73 73 20 7.5 21.3 1.0 26.0 56 47.50 81.50 51209 53209 2600 3600 0.038 62 56 1.0 0.3040
45 47.0 85 85 28 10.0 30.1 1.0 25.0 64 79.50 118.00 51309 53309 1900 2800 0.12 69 61 1.0 0.6800
45 47.0 100 100 39 12.5 42.4 1.1 29.0 80 130.00 240.00 51409 53409 1600 2200 0.37 78 67 1.0 1.4000
50 52.0 70 70 14 – – 0.6 – – 28.00 61.00 51110 – 3200 4300 0.024 62 58 0.6 0.1480
50 52.0 78 78 22 7.5 23.5 1.0 32.5 64 54.40 94.40 51210 53210 2400 3400 0.069 67 61 1.0 0.3650
50 52.0 95 95 31 11.0 34.3 1.1 28.0 72 96.20 146.00 51310 53310 1800 2600 0.19 77 68 1.0 0.9360
50 52.0 110 110 43 14.0 45.6 1.5 35.0 90 159.00 310.00 51410 53410 1500 2000 0.60 86 74 1.5 2.0000
55 57.0 78 78 16 – – 0.6 – – 34.70 78.70 51111 – 2800 3800 0.039 69 64 0.6 0.2230
55 57.0 90 90 25 9.0 27.3 1.0 35.0 72 69.40 123.00 51211 53211 1900 2800 0.11 76 69 1.0 0.5920
55 57.0 105 105 35 11.7 39.3 1.1 30.0 80 126.00 189.00 51311 53311 1600 2200 0.26 85 75 1.0 1.3100
55 57.0 120 120 48 – 50.5 1.5 28.0 90 178.00 360.00 51411 53411 1300 1800 0.79 94 81 1.5 2.5500
60 62.0 85 85 17 – – 1.0 – – 40.20 91.00 51112 – 2600 3600 0.054 75 70 1.0 0.2780
60 62.0 95 95 26 9.0 28.0 1.0 32.5 72 70.60 133.00 51212 53212 1900 2800 0.12 81 74 1.0 0.6630
60 62.0 110 110 35 11.5 38.3 1.1 41.0 90 129.00 209.00 51312 53312 1600 2200 0.26 90 80 1.0 1.3800
60 62.0 130 130 51 16.0 54.0 1.5 34.0 100 199.00 400.00 51412M 53412M 1100 1600 0.96 102 88 1.5 3.1000
Boundary dimensions
(mm)		 Load rating
(KN)		 Bearing numbers Limiting speed
(r/min)		 Minimum load factors
A		 Abutment and fillet dimensions
(mm)		 Mass
(approx.)
(flat)
kg
d d1
min		 D D1
min		 H C H1 r1,2
min		 S R Cr Cor Flat housing washer Sphered housing washer Grease Oil da
min		 Da
max		 ra
max
65 67.0 90 90 18 65.0 – 1.0 – – 47.30 108.00 51113 – 2400 3400 0.06 80 75 1.0 0.3140
65 67.0 100 100 27 9.0 28.7 1.0 40.0 80 72.00 144.00 51213 53213 1800 2600 0.14 86 79 1.0 0.7410
65 67.0 115 115 36 12.5 39.4 1.1 38.5 90 139.00 229.00 51313 53313 1500 2000 0.30 95 85 1.0 1.5100
65 68.0 140 140 56 – 60.2 2.0 40.0 112 216.00 450.00 51413M 53413M 1000 1500 1.2 110 95 2.0 4.0000
70 72.0 95 95 18 – – 1.0 – – 47.80 114.00 51114 – 2400 3400 0.068 85 80 1.0 0.3400
70 72.0 105 105 27 9.0 28.8 1.0 38.0 80 76.00 162.00 51214 53214 1800 2600 0.16 91 84 1.0 0.7920
70 72.0 125 125 40 13.0 44.2 1.1 43.0 100 161.00 268.00 51314 53314 1400 1900 0.53 103 92 1.0 2.0000
70 73.0 150 150 60 19.5 63.6 2.0 34.0 112 234.00 500.00 51414M 53414M 950 1400 1.6 118 102 2.0 5.0000
75 77.0 100 100 19 – – 1.0 – – 48.10 120.00 51115 – 2200 3200 0.11 90 85 1.0 0.3820
75 77.0 110 110 27 9.5 28.3 1.0 49.0 90 77.10 172.00 51215 53215 1700 2400 0.17 96 89 1.0 0.8170
75 77.0 135 135 44 15.0 48.1 1.5 37.0 100 184.00 311.00 51315 53315 1200 1700 0.79 111 99 1.5 2.5900
75 78.0 160 160 65 21.0 69.0 2.0 42.0 125 251.00 560.00 51415M 53415M 900 1300 1.9 126 109 2.0 6.7500
80 82.0 105 105 19 – – 1.0 – – 50.00 130.00 51116 – 2000 3000 0.12 95 90 1.0 0.4060
80 82.0 115 115 28 10.0 29.5 1.0 46.0 90 86.40 193.00 51216 53216 1700 2400 0.22 101 94 1.0 0.9080
80 82.0 140 140 44 15.0 47.6 1.5 50.0 112 189.00 339.00 51316 53316 1200 1700 0.79 116 104 1.5 2.7200
80 83.0 170 170 68 22.0 72.2 2.1 36.0 125 270.00 620.00 51416M 53416M 850 1200 2.3 133 117 2.0 7.9500
85 87.0 110 110 19 – – 1.0 – – 49.30 131.00 51117 – 2000 3000 0.14 100 95 1.0 0.4240
85 88.0 125 125 31 11.0 33.1 1.0 52.0 100 97.90 229.00 51217 53217 1600 2200 0.39 109 101 1.0 1.2500
85 88.0 150 150 49 17.5 53.1 1.5 43.0 112 215.00 389.00 51317 53317 1100 1600 1.1 124 111 1.5 3.5200
85 88.0 180 177 72 – 77.0 2.1 47.0 140 286.00 680.00 51417M 53417M 850 1200 2.9 141 124 2.0 9.4500
90 92.0 120 120 22 – – 1.0 – – 66.50 177.00 51118 – 1800 2600 0.22 108 102 1.0 0.6520
90 93.0 135 135 35 13.5 38.5 1.1 45.0 100 125.00 277.00 51218 53218 1500 2000 0.55 117 108 1.0 1.6800
90 93.0 155 155 50 18.0 54.6 1.5 40.0 112 232.00 410.00 51318 53318 1000 1500 1.3 129 116 1.5 3.7300
90 93.0 190 187 77 25.5 81.2 2.1 40.0 140 307.00 750.00 51418M 53418M 800 1100 3.5 149 131 2.0 11.0000

Boundary dimensions
(mm)		 Load rating
(KN)		 Bearing numbers Limiting speed
(r/min)		 Minimum load factors
A		 Abutment and fillet dimensions
(mm)		 Mass
(approx.)
(flat)
kg
d d1
min		 D D1
min		 H C H1 r1,2
min		 S R Cr Cor Flat housing washer Sphered housing washer Grease Oil da
min		 Da
max		 ra
max
130 134.0 225 220 75 – 80.3 2.1 53.0 160 358.00 1060.00 51326M 53326M 750 1000 6.8 186 169 2.0 13.0000
130 134.0 270 265 110 – 115.2 4.0 58.0 200 520.00 1600.00 51426 53426 560 750 16 213 187 3.0 32.0000
140 142.0 180 178 31 – – 1.0 – – 113.00 366.00 51128 – 1300 1800 1 164 156 1.0 1.8600
140 143.0 200 197 46 17.0 48.6 1.5 87.0 160 190.00 570.00 51228 53228 950 1400 2 176 164 1.5 4.3500
140 144.0 240 235 80 – 84.9 2.1 68.0 180 397.00 1220.00 51328M 53328M 700 950 9.1 199 181 2.0 15.5000
140 144.0 280 275 112 – 117.0 4.0 83.0 225 520.00 1600.00 51428 53428 530 700 16 223 197 3.0 34.5000
150 152.0 190 188 31 – – 1.0 – – 117.00 371.00 51130M – 1200 1700 1 174 166 1.0 2.1700
150 153.0 215 212 50 – 53.3 1.5 79.0 160 238.00 735.00 51230M 53230M 900 1300 3.3 189 176 1.5 6.1000
150 154.0 250 245 80 – 83.7 2.1 89.5 200 410.00 1290.00 51330M 53330M 670 900 10 209 191 2.0 16.5000
150 154.0 300 295 120 – 125.9 4.0 69.0 225 559.00 1800.00 51430 53430 500 670 20 239 211 3.0 42.5000
160 162.0 200 198 31 – – 1.0 – – 120.00 399.00 51132M – 1200 1700 1.1 184 176 1.0 2.3400
160 163.0 225 222 51 – 54.7 1.5 74.0 160 242.00 780.00 51232M 53232M 850 1200 3.8 199 186 1.5 6.5500
160 164.0 270 265 87 – 91.7 3.0 77.0 200 449.00 1500.00 51332 53232 630 850 14 225 205 2.5 21.0000
160 164.0 320 315 130 – 135.3 5.0 84.0 250 650.00 2210.00 51432 53432 450 670 – 254 226 4.0 52.7000
170 172.0 215 213 34 – – 1.1 – – 131.00 443.00 51134M – 1100 1600 1.5 197 188 1.0 2.9600
170 173.0 240 237 55 – 58.7 1.5 91.0 180 286.00 930.00 51234M 53234M 800 1100 5.4 212 198 1.5 8.1500
170 174.0 280 275 87 – 91.3 3.0 105.0 225 468.00 1600.00 51334 53334 600 800 16 235 215 2.5 22.0000
170 174.0 340 335 135 – 141.0 5.0 97.0 280 715.00 2480.00 51434 53434 430 630 – 269 241 4.0 61.2000
180 183.0 225 222 34 – – 1.1 – – 134.00 473.00 51136M – 1000 1500 1.7 207 198 1.0 3.0800
180 183.0 250 247 56 – 58.2 1.5 112.0 200 296.00 1000.00 51236M 53236M 800 1100 6.1 222 208 1.5 8.6000
180 184.0 300 295 95 – 99.3 3.0 91.0 225 520.00 1830.00 51336 53336 560 750 21 251 229 2.5 28.500
180 184.0 360 355 140 – 148.3 5.0 97.0 280 750.00 2730.00 51436 53436 400 600 – 285 255 4.0 70.5000
190 193.0 240 237 37 – – 1.1 – – 172.00 655.00 51138M – 950 1400 2.6 220 210 1.0 4.0500
190 194.0 270 267 62 – 65.7 2.0 98.0 200 332.00 1160.00 51238 53238 750 1000 8.4 238 222 2.0 12.0000
Boundary dimensions
(mm)		 Load rating
(KN)		 Bearing numbers Limiting speed
(r/min)		 Minimum load factors
A		 Abutment and fillet dimensions
(mm)		 Mass
(approx.)
(flat)
kg
d d1
min		 D D1
min		 H C H1 r1,2
min		 S R Cr Cor Flat housing washer Sphered housing washer Grease Oil da
min		 Da
max		 ra
max
190 195.0 320 315 105 – 111.0 4.0 104.0 250 550.00 1960.00 51338 53338 500 750 30 266 244 3.0 36.5000
200 203.0 250 247 37 – – 1.1 – – 168.00 655.00 51140M – 950 1400 2.6 230 220 1.0 4.2500
200 204.0 280 277 62 – 65.3 2.0 125.0 225 338.00 1220.00 51240 53240 750 1000 9.1 248 232 2.0 12.0000
200 205.0 340 335 110 – 118.4 4.0 92.0 250 624.00 2400.00 51340 53340 480 630 35 283 257 3.0 44.5000
220 223.0 270 267 37 – – 1.1 – – 178.00 735.00 51144 – 900 1300 3.3 250 240 1.0 4.6000
220 224.0 300 297 63 – 65.6 2.0 118.0 225 351.00 1320.00 51244 53244 700 950 11 268 252 2.0 13.0000
240 243.0 300 297 45 – – 1.5 – – 234.00 965.00 51148 – 800 1100 5.6 276 264 1.5 7.5500
240 244.0 340 335 78 – 81.6 2.1 122.0 250 462.00 1860.00 51248 53248 600 800 21 299 281 2.0 23.0000
260 263.0 320 317 45 – – 1.5 – – 238.00 1020.00 51152 – 800 1100 6.3 296 284 1.5 8.1000
260 264.0 360 355 79 – 82.8 2.1 152.0 280 475.00 2000.00 51252 53252 560 750 24 319 301 2.0 25.0000
280 283.0 350 347 53 – – 1.5 – – 319.00 1340.00 51156 – 700 950 11 322 308 1.5 12.0000
280 284.0 380 375 80 – 85.0 2.1 143.0 280 494.00 2160.00 51256 53256 560 750 28 339 321 2.0 26.5000
300 304.0 380 376 62 – – 2.0 – – 364.00 1600.00 51160 – 630 850 16 348 332 2.0 17.5000
320 324.0 400 396 63 – – 2.0 – – 371.00 1700.00 51164 – 600 800 18 368 352 2.0 19.0000
340 416 420 344 64 – – 2.0 – – 323.00 1768.00 51168 – 600 800 20 388 372 2.0 19.9000
340 455 460 345 96 – – 3.0 – – 465.00 2495.00 51268 – 450 600 53 411 389 2.5 44.6000
340 535 540 345 160 – – 5.0 – – 863.00 4439.00 51368 – 400 530 – 452 356 4.0 137.0000
350 476 476 350.4 85 – – 3.7 – – 486.00 2717.00 8770 – 400 530 – 425 401 3.0 43.3000
360 436 440 364 65 – – 2.0 – – 331.00 1890.00 51172 – 560 750 22 408 392 2.0 23.9000
360 495 500 365 110 – – 4.0 – – 610.00 3591.00 51272 – 400 530 90 442 418 3.0 64.7000
460 615 620 465 130 – – 5.0 – – 688.00 4504.00 51292 – 430 560 55 552 528 4.0 113.0000
600 705 710 604 85 – – 3.0 – – 556.00 4445.00 511/600 – 380 500 120 667 643 2.5 64.9000
630 760 780 650 112 – – 4.0 – – 697.00 5515.00 31688/630 – 320 430 – 717 693 3.0 118.0000
670 795 800 674 105 – – 4.0 – – 683.00 5778.00 511/670F3 – 300 400 270 748 722 3.0 109.0000

Thrust Ball Bearings

Single direction thrust ball bearings

Single direction thrust ball bearings
Double direction thrust ball bearings

Double direction thrust ball bearings
Single direction thrust ball bearings with sphered housing washers

Single direction thrust ball bearings with sphered housing washers
About us
Ningbo Demy (D&M) Bearings Co., Ltd.
Ningbo Demy (D&M) Bearings Co., Ltd.
Ningbo Demy (D&M) Bearings Co., Ltd. is professional China Single direction thrust ball bearings Suppliers and Wholesale Single direction thrust ball bearings Manufacturers.Located on the coast of Eastern China, in the beautiful and ancient city of Ningbo, is a rising star enterprise, Ningbo Demy (D&M) Bearings Co., LTD. Its subsidiary company – Ningbo Giant Bearing manufacturing Co., Ltd specializes in high class quality bearings for industrial and automotive applications.
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Thrust Ball Bearings Industry knowledge

How Single direction thrust ball bearings work

Single Direction Thrust Ball Bearings are mainly composed of inner rings, outer rings, rolling elements and cages. Raceways are designed on both the inner and outer rings to accommodate rolling elements. The rolling elements are usually made of steel balls. They roll between the raceways of the inner and outer rings to transmit axial loads. The cage is used to fix the position of the rolling elements to prevent them from colliding with each other and wearing out. The most notable feature of one-way thrust ball bearings is their unidirectionality, a bearing design that allows rotating parts to move freely in one direction while being restricted in the opposite direction. This characteristic gives one-way thrust ball bearings unique advantages in applications where the direction of movement of rotating parts needs to be controlled.

The working principle of Single Direction Thrust Ball Bearings is based on the rolling friction of rolling elements. When a rotating component is subjected to an axial load, the rolling elements roll between the raceways of the inner and outer rings, thereby transferring the load to the bearing's support structure. In this process, the rolling friction of the rolling elements is much smaller than the sliding friction, so energy consumption and wear can be significantly reduced. The key to a unidirectional thrust ball bearing lies in its specially designed raceway and cage. The inclination angle on the raceway and the structure of the cage jointly determine the unidirectionality of the bearing. When the rotating part attempts to move in an impermissible direction, the rolling elements will be restricted to one side of the raceway by the cage, thereby preventing the movement of the rotating part. This design makes one-way thrust ball bearings highly reliable in applications where it is necessary to limit the direction of movement of rotating parts.

During the operation of one-way thrust ball bearings, the relative position between the inner ring and the outer ring is fixed. When the rotating component is subjected to an axial load, the inner ring will be displaced relative to the outer ring, and the rolling elements roll between the raceways to support and transmit the load. Since the rolling friction of the rolling elements is small, the bearings have lower energy consumption and longer service life when transmitting loads. In situations where it is necessary to limit the movement direction of rotating parts, one-way thrust ball bearings achieve this function through their specially designed raceways and cages. When the rotating part attempts to move in an impermissible direction, the rolling elements will be restricted to one side of the raceway by the cage, thereby preventing the movement of the rotating part. This limiting effect is achieved through the interaction between the cage and the rolling elements, so it has high reliability and stability.