Needle Roller Bearings
Needle roller bearings are essentially cylindrical roller bearings except that their cylindrical rollers have a length 3 to 10 times their diameter (versus a length less than 3 times their diameter). Even though they have a low cross section, needle roller bearings have a high radial load capacity and are exceptionally apt for bearing applications where radial space is limited.
There are numerous types available, and many have no inner rings. The drawn-cup type has a pressed steel outer ring and the precision (solid) type has a machined outer ring. There are also cage-and-roller assemblies without rings. Most bearings have pressed steel cages, but some are without cages.
| Needle Roller Bearings with Double Ribs (Double Locking Rings) on Outer Ring(Non-standard) | |||
| 48 series | NA 4822-NA 4876 | 49 series | NA 4900-NA 4928 |
| 59 series | NA 5902-NA 5917 | 69 series(Non-standard) | NA 6900-NA 6920 |
| NKI series(Non-standard) | NKI 5/12-NKI 140/32 | ||
| NKIS series and other Non-standard series | NKIS 6-NKIS 100 | ||
| Needle Roller Bearings with Oil Holes on the Outer Rings and Double Ribs(Flat Retainer Rings) | |||
| 49 series(Non-standard) | NAV 4902-NAV 4930 | 40 series(Non-standard) | NAV 4002-NAV 4017 |
| Needle Roller Bearings without Ribs on the Outer Rings | |||
| NAO series | NAO 6×17×10 - NAO 90×120×30 | ||
| NAOV series | |||
| Needle Roller Bearings with Double Ribs(Double Locking Rings) on the Outer Ring but without Inner Rings | |||
| 48 series | RNA 4822-RNA 4876 | 49 series(Non-standard) | RNA 49/8 RNA 49/9A |
| 49 series | RNA 4900-RNA 4928 | 59 series(Non-standard) | RNA 59/7A RNA 59/8A |
| 59 series | RNA 5906-RNA 5915 | 69 series(Non-standard) | RNA 6900-RNA 6920 |
| Also produce 40 series, 50 series, 60 series and other Non-standard series. | |||
| Needle Roller Bearings without Inner Rings | |||
| NK series(Non-standard) | NK 5/10-NK 145/42 | NKS series | NKS 8-NKS 80 |
| BR series | BR 101812-BR 648032 | BRI series | BRI 61812-BRI 568032 |
| Also produce HJ series, MR series,TR series | |||
| Needle Roller Bearings without Inner Rings and Cages | |||
| 48 series | RNAV 4832-RNAV 4864 | 49 series | RNAV 4901-RNAV 4926 |
| 40 series | RNAV 4002-RNAV 4016 | ||
| Also produce 69 series and Non-standard series | |||
| Needle Roller Bearings with Cages but without Inner Rings and Ribs on the Outer Rings | |||
| RNAO series | RNAO 5×10×8-RNAO 130×150×24 | ||
| Double Row Needle Roller Bearings with Cages but without Inner Rings and Ribs on the Outer Rings | |||
| RNAO 16×24×20 ZW-RNAO 80×100×60 ZW | |||
| Drawn Cup Needle Roller Bearings | |||
| BK 0306-BK 7024 | HK 0306-HK 7024 | TLA 0608-TLA 5020 | |
| Drawn Cup Round end Needle Roller Bearings with Cages but without Inner Rings | |||
| BKH series | BKH 0810-BKH 4524 | HKH series | HKH 0810-HKH 4524 |
| Non-standard series | HK/5×8.5×7-HK/60×68×32 2RS | Non-standard series | BK/8×12×15-BK/60×68×12 |
| Inch Drawn Cup Needle Roller Bearings | |||
| SCE series | BCE series | SCH series | BCH series |
| Also produce SN, CS, CSN series and other Non-standard series. | |||
DRAWN SHELL NEEDLE BEARINGS:
INCH SERIES: SCE, BCE, SCH, BCH, SN, CS, CSN
METRIC SERIES: HK, BK
CAGE AND ROLLER ASSEMBLIES: K, KZK, KBK
PRECISION GROUND NEEDLE BEARINGS: NA, RNA, NK, NKS, NKI, NKIS
INNER RINGS: IR, LR
INCH SERIES: SCE, BCE, SCH, BCH, SN, CS, CSN
METRIC SERIES: HK, BK
CAGE AND ROLLER ASSEMBLIES: K, KZK, KBK
PRECISION GROUND NEEDLE BEARINGS: NA, RNA, NK, NKS, NKI, NKIS
INNER RINGS: IR, LR
