Bearing distributor/Steel needle roller bearing without inner ring/ NK/RNA series/Factory price
Description of NA,NKI series:
| Series | Inner ring | Description |
| With | Without |
| NK | | Yes | Light series |
| NKS | | Yes | Heavy series |
| RNA 49 | | Yes | Sizes same as 49 series |
| RNA 69 | | Yes | Sizes same as 69 series, double row(single row to RNA6906) |
| RNA 48 | | Yes | Sizes same as 48 series |
| NKI | Yes | | Light series |
| NKIS | Yes | | Heavy series |
| NA 49 | Yes | | Sizes same as 49 series |
| NA 69 | Yes | | Sizes same as 69 series, double row(single row to RNA6906) |
| NA 48 | Yes | | Sizes same as 48 series |
Needle roller Bearing classification :
1. Radial needle roller and cage assemblies
2. NA, NKI type needle roller bearings
3. RNA, NK model without inner ring needle roller bearings
4. Type HK stamping outer ring needle roller bearing
5. Type BK stamping outer ring needle roller bearing Mounted on the shaft end drawn cup needle roller bearing is open on both sides (1) and unilateral enclosed (2). Closed drawn cup base face can absorb small axial guiding force. Mounted on the shaft end drawn cup needle roller bearing is open on both sides (1) and unilateral enclosed (2). Closed drawn cup base face can absorb small axial guiding force.
Drawings:NA,NKI ,NKIS series with inner ring.
Catalogue of NKI series:
| Shaft | Models | Boundary Dimensions | Basic Load Rating | Limiting Speed |
| d | F | D | B | rS | Dynamic | Static | Oil |
| | |
| C | Co |
| mm | mm | Min. | N | rpm |
| 5 | +NKI 5/12 TN | 5 | 8 | 15 | 12 | 0.3 | 3950 | 4100 | 32000 |
| +NKI 5/16 TN | 5 | 8 | 15 | 16 | 0.3 | 5100 | 5800 | 32000 |
| 6 | +NKI 6/12 TN | 6 | 9 | 16 | 12 | 0.3 | 4500 | 5000 | 31000 |
| +NKI 6/16 TN | 6 | 9 | 16 | 16 | 0.3 | 5900 | 7100 | 31000 |
| +NKIS 6 TN | 6 | 10 | 19 | 13 | 0.3 | 5800 | 6000 | 29000 |
| 7 | +NKI 7/12 TN | 7 | 10 | 17 | 12 | 0.3 | 4750 | 5500 | 29000 |
| +NKI 7/16 TN | 7 | 10 | 17 | 16 | 0.3 | 6200 | 7800 | 29000 |
| +NKIS 7 TN | 7 | 12 | 22 | 16 | 0.6 | 9600 | 10400 | 26000 |
| 8 | NKIS 8 | 8 | 14 | 25 | 16 | 0.6 | 14400 | 13800 | 24000 |
| 9 | NKI 9/12 | 9 | 12 | 19 | 12 | 0.3 | 6400 | 7100 | 27000 |
| NKI 9/16 | 9 | 12 | 19 | 16 | 0.3 | 9000 | 11000 | 27000 |
| NKIS 9 | 9 | 15 | 26 | 16 | 0.6 | 14400 | 14000 | 23000 |
| 10 | NKI 10/16 | 10 | 14 | 22 | 16 | 0.3 | 10100 | 11500 | 25000 |
| NKI 10/20 | 10 | 14 | 22 | 20 | 0.3 | 12800 | 15600 | 25000 |
| INKIS 10 | 10 | 16 | 28 | 16 | 0.6 | 15700 | 15800 | 22000 |
| NA 4900 | 10 | 14 | 22 | 13 | 0.3 | 8500 | 9200 | 25000 |
| 12 | NKI 12/16 | 12 | 16 | 24 | 16 | 0.3 | 11300 | 13900 | 23000 |
| NKI 12/20 | 12 | 16 | 24 | 20 | 0.3 | 14400 | 18800 | 23000 |
| INKIS 12 | 12 | 18 | 30 | 16 | 0.6 | 16800 | 17700 | 21000 |
| NA 4901 | 12 | 16 | 24 | 13 | 0.3 | 9400 | 10900 | 23000 |
| NA 6901 | 12 | 16 | 24 | 22 | 0.3 | 16000 | 21600 | 23000 |
| 15 | NKI 15/16 | 15 | 19 | 27 | 16 | 0.3 | 13000 | 17400 | 22000 |
| NKI 15/20 | 15 | 19 | 27 | 20 | 0.3 | 16500 | 23600 | 22000 |
| INKIS 15 | 15 | 22 | 35 | 20 | 0.6 | 24500 | 28000 | 18000 |
| NA 4902 | 15 | 20 | 28 | 13 | 0.3 | 10600 | 13600 | 21000 |
| NA 6902 | 15 | 20 | 28 | 23 | 0.3 | 17300 | 25500 | 21000 |
| 17 | NKI 17/16 | 17 | 21 | 29 | 16 | 0.3 | 13500 | 18700 | 21000 |
| NKI 17/20 | 17 | 21 | 29 | 20 | 0.3 | 17100 | 25500 | 21000 |
| NKIS 17 | 17 | 24 | 37 | 20 | 0.6 | 26000 | 31000 | 17000 |
| NA 4903 | 17 | 22 | 30 | 13 | 0.3 | 11000 | 14600 | 20000 |
| NA 6903 | 17 | 22 | 30 | 23 | 0.3 | 18600 | 29000 | 20000 |
Our Needle Roller Bearing Catalogue
Cylindrical Roller Bearing
Auto Parts
Automobile Bearings
Bearing Inner Ring
Clutch Bearing
Combined Needle Roller Bearing
Combined Needle Roller Bearing With The Inner Ring
Curve Roller Bearings
Cylindrical Roller Bearings With Snap Ring
Cylindrical Roller Bearings With Snap Ring Groores
Drawn Cup Needle Roller Bearing With Retainer
Drawn Cup Needle Roller Bearing With Ring
Drawn Cup Needle Roller Bearing With Seal Ring
Drawn Cup Needle Roller Clutch
Drawn Cup Full Complement Needle Roller Bearings
Drawn Cup Needle Roller Bearing
Drawn Cup Needle Roller Clutch Assembly
Full Complement Cylindrical Roller Bearings
Full Coplement Needle Roller Bearing With Or Without Inner Ring
Heavy Duty Bearing
Needle Bearing Inner Ring
Needle Bearing Manufacturer
Needle Roller And Cage Assemblies
Needle Roller Bearing
Needle Roller Bearing Without Inner Ring
Needle Roller Without Shoulder And Inner Ring
Needle Roller Without Shoulder And With Inner Ring
No Collar Slab Roller And Cage Assemblies
Non-Standard Bearings
One Way Clutch
One-Way Needle Roller Bearing
Overrunning Clutch
Radial Needle Roller And Cage Assemblies
Rod-Use Needle Roller And Cage Assemblies
Roller Pins
Rollering Bearings
Seal Ring Needle Roller Bearing With Inner Ring Or Without Inner Ring
Sealed Needle Roller Bearings
Seat Ring
Self-Aligning Needle Bearing
Shaft Ring
Solid Collar Needle Roller Bearing
Sprag Type One-Way Clutch
Supporting Roller Bearings
Thrust Ball Bearing With Flat Seat
Thrust Cylindrical Roller And Cage Assemblies Seat Ring Shaft Ring
Thrust Needle Roller Bearings
Thrust Washer etc.
