Detailed Product Description
Cylindrical Linear NTN Roller Bearings High Performance NNU 4921 NNU 4988
Introduction
Linear bearing often cooperate with quenching line transmission shaft when using.It is a systerm doing strait line moving.Due to the point contact between loading ball bearing and quenching transmission shaft, Linear bearing has low loading capacity.But Linear bearing is with smallest friction , high precision and fast moving speed when they doing linear motion
Quick Detail:
1 Structure: Cylindrical Roller Bearings
2 Material: GCr15, GCr15SiMn, G20Cr2Ni4A
3 Precision Rating: P0, P4, P5, P6
4 Seals Type:open,LLU
5 Vibration Level: V1, V2, V3
6 Radial Clearance: C0, C3, C4
7 Noisy level: Z1, Z2
8 Cage Material: Brass, Steel, Nylon
9 Tolerence Level: ABEC-1, 3, 5, 7
10 Certification: ISO 9000
The size include:
49 series
part of them are listed below
Boundary dimensions(mm) | Bearing Number |
d | D | B | HDBB | NTN |
105 | 145 | 40 | NNU 4921 | NNU4921 |
150 | 210 | 60 | NNU 4930 | NNU4930 |
180 | 250 | 69 | NNU 4936 | NNU4936 |
320 | 440 | 118 | NNU 4964 | NNU4964 |
440 | 600 | 160 | NNU 4988 | NNU4988 |
560 | 750 | 190 | NNU 49/560 | NNU49/560 |
Competitive Advantage
1 Quality level: reach the same level as the Japanese and European bearings
2 quick delievery, with large in stock.
NTN cylindrical roller bearings, we can also supply fag, ntn, nsk ,koyo ect brand quality beairngs in zz, open, 2RS, precision of P6 & P4