Angular Contact Thrust Ball Bearing
Angular Contact Ball Bearing (NSK)
Maker : NSK
Numbering System of Double-Direction Angular Contact Thrust Ball Bearings (TAC Series)
주 1) TAC (NSK) 계열의 베어링은 생산 중단 되었습니다
2)종래의 TAC 계열을 사용하고 있는 주축에는 BAR (30 ° contact angle) ,BTR : 40 ° contact angle
베어링으로 교체되었으며, 축과 하우징을 변경하지 않고 Collar 치수 만 ⓒ 에서 ⓓ 로
길이를 늘이는 것만으로 변경이 가능합니다.
3) BAR , BTR 베어링은 외륜이 Angular Contact Thrust Ball Bearing 보다 작으므로
상호간에 호환성이 없습니다.
(☞ 베어링의 조립 틈새 참조)
① Bore diameter (mm)
② Bearing type
BAR : 30 ° contact angle
BTR : 40 ° contact angle
③ Dimension
10 : 10 series (bore, outer diameter, and NSK-specific dimensions are available)
④ Material
| Type | Material |
| Rings | Rolling elements |
| S | Bearing steel (SUJ2) | Bearing steel (SUJ2) |
| H | Bearing steel (SUJ2) | ceramics (Si3N4) |
⑤ Cage
TYN : ball guided polyamide resin cage; limitingspeed dmn = 1 400 000
operationaltemperature limit = 120°C
Bearing with TYN cage (10 series with a maximum bore diameter of 150 mm)
No symbol : brass cages
⑥ Arrangement : DB: Back-to-back arrangement
⑦ Preload
EL : extra light preload
L : light preload
CP : special preload
CA : special axial clearance
⑧ Accuracy
P2A : ISO Class 2 except outer diameter
P4A : ISO Class 4 except outer diameter
Double-Direction Angular Contact Thrust Ball Bearings
(TAC Series)
TAC29D Series
TAC20D Series
Bearing
Numbers |
Boundary Dimensions (mm) | Basic
Load Ratings (kN) | Mass
(g) | Limiting Speeds |
| d | D | T | C | r
(min) | r1
(min) | Cr
(Dynamic) | C0r
(Static) | Grease | Oil |
| 140TAC20D+L | 140 | 210 | 84 | 42 | 2.0 | 1.0 | 145.00 | 525 | 8.750 | 2600 | 2900 |
| 150TAC29D+L | 150 | 210 | 72 | 36 | 2.0 | 1.0 | 116.00 | 465 | 6.600 | 2500 | 2800 |
| 150TAC20D+L | 150 | 225 | 90 | 45 | 2.1 | 1.1 | 172.00 | 620 | 10.700 | 2400 | 2700 |
| 160TAC29D+L | 160 | 220 | 72 | 36 | 2.0 | 1.0 | 118.00 | 490 | 7.000 | 2400 | 2700 |
| 160TAC20D+L | 160 | 240 | 96 | 48 | 2.1 | 1.1 | 185.00 | 680 | 13.000 | 2300 | 2500 |
| 170TAC29D+L | 170 | 230 | 72 | 36 | 2.0 | 1.0 | 120.00 | 520 | 7.350 | 2300 | 2500 |
| 170TAC20D+L | 170 | 260 | 108 | 54 | 2.1 | 1.1 | 218.00 | 810 | 17.700 | 2100 | 2400 |
| 180TAC29D+L | 180 | 250 | 84 | 42 | 2.0 | 1.0 | 158.00 | 655 | 10.700 | 2100 | 2400 |
| 180TAC20D+L | 180 | 280 | 120 | 60 | 2.1 | 1.1 | 281.00 | 1020 | 23.400 | 2000 | 2200 |
| 190TAC29D+L | 190 | 260 | 84 | 42 | 2.0 | 1.0 | 161.00 | 695 | 11.200 | 2000 | 2300 |
| 190TAC20D+L | 190 | 290 | 120 | 60 | 2.1 | 1.1 | 285.00 | 1060 | 24.400 | 1900 | 2100 |
| 200TAC29D+L | 200 | 280 | 96 | 48 | 2.1 | 1.1 | 204.00 | 855 | 15.700 | 1900 | 2100 |
| 200TAC20D+L | 200 | 310 | 132 | 66 | 2.1 | 1.1 | 315.00 | 1180 | 31.500 | 1800 | 2000 |
| 220TAC29D+L | 220 | 300 | 96 | 48 | 2.1 | 1.1 | 210.00 | 930 | 17.000 | 1800 | 2000 |
| 240TAC29D+L | 240 | 320 | 96 | 48 | 2.1 | 1.1 | 213.00 | 980 | 18.300 | 1700 | 1800 |
| 260TAC29D+L | 260 | 360 | 120 | 60 | 2.1 | 1.1 | 315.00 | 1390 | 31.500 | 1500 | 1700 |
| 280TAC29D+L | 280 | 380 | 120 | 60 | 2.1 | 1.1 | 320.00 | 1470 | 33.500 | 1400 | 1600 |