NRXT（DD) SERIES CROSSED ROLLER BEARING

NRXT(DD) series of JCB crossed roller bearing is consisted of an outer ring and an inner ring with a group of cylindrical rollers and spacers (or cages). The rollers are arranged between the inner ring and the outer ring, and spacers are placed between the rollers to prevent them from colliding with each other.

Description

JCB crossed roller bearing (NSK series) have two types, including split outer ring type with separator (NRXT…DD),split outer ring type with separator (NRXT…E)…

_NRXT…DD series crossed roller bearing is split outer ring type with separator

_Outer Diameter of NRXT…DD series crossed roller bearing is from 41 mm to 700 mm

_Inner Diameter of NRXT…DD series crossed roller bearing is from 25 mm to 600 mm

_Accuracy class of NRXT…DD series crossed roller bearing: P6,P5, P4, P2

_Seal Symbol of NRXT…DD series crossed roller bearing: No symbol signifies the open type without seals.(DD signifies seals on both sides. E signifies no seal )

_Axial internal clearance of NRXT…DD series crossed roller bearing: Including C8,C1

Schematic diagram

Table1

Bearing No.	Boundary dim.（mm）				Basic loading rates(N)		Oil Hole(mm)	Abutment and Fillet Dimensions(mm)	Weight
Bearing No.	d	D	B	rmin	C	Co	doh	ramax	kg
NRXT 2508DD	25	41	8	0.6	4000	4400	1.5	0.6	0.05
NRXT 4010DD	40	65	10	0.6	7700	9850	1.5	0.6	0.14
NRXT 5013DD	50	80	13	0.6	16400	20900	2	0.6	0.26
NRXT 6013DD	60	90	13	0.6	17900	24600	2	0.6	0.3
NRXT 7013DD	70	100	13	0.6	19300	28400	2	0.6	0.34
NRXT 8013DD	80	110	13	0.6	20500	32000	2	0.6	0.38
NRXT 8016DD	80	120	16	0.6	29800	42500	2.5	0.6	0.67
NRXT 9016DD	90	130	16	1	31000	46000	2.5	1	0.74
NRXT 9020DD	90	140	20	1	32000	49000	2.5	1	1.27
NRXT 10020DD	100	150	20	1	33000	52500	2.5	1	1.37
NRXT 11020DD	110	160	20	1	35000	59000	2.5	1	1.49
NRXT 12020DD	120	170	20	1.1	36000	62000	2.5	1	1.6
NRXT 12025DD	120	180	25	1.1	70000	110000	2.5	1	2.47
NRXT 13025DD	130	190	25	1.1	72500	118000	2.5	1	2.63
NRXT 14025DD	140	200	25	1.1	75000	125000	2.5	1	2.8
NRXT 15025DD	150	210	25	1.1	77000	133000	2.5	1	2.96
NRXT 15030DD	150	230	30	1.1	119000	192000	3	1	5.55

Table 2

Bearing No.	Boundary dim.（mm）				Basic loading rates(N)		Oil Hole(mm)	Abutment and Fillet Dimensions(mm)	Weight
Bearing No.	d	D	B	rmin	C	Co	doh	ramax	kg
NRXT 20025DD	200	260	25	1.5	88000	172000	2.5	1.5	3.75
NRXT 20030DD	200	280	30	1.5	136000	247000	3	1.5	6.3
NRXT 25025DD	250	310	25	2	98000	211000	2.5	2	4.55
NRXT 25030DD	250	330	30	2	150000	300000	3	2	7.65
NRXT 30025DD	300	360	25	2.1	107000	250000	2.5	2	5.3
NRXT 30035DD	300	395	35	2.1	194000	405000	3	2	12.6
NRXT 30040DD	300	405	40	2.1	199000	425000	4	2	16.5
NRXT 40035DD	400	480	35	2.1	188000	465000	3	2	13.4
NRXT 40040DD	400	510	40	2.1	226000	545000	4	2	22.5
NRXT 50040DD	500	600	40	2.1	239000	625000	4	2	24.4
NRXT 50050DD	500	625	50	3	325000	810000	5	2.5	39.5
NRXT 60040DD	600	700	40	3	261000	745000	4	2.5	28.9

How to ensure quality of crossed roller bearing

–Advanced design

From the beginning of design stage, we make a modeling to design crossed roller bearing by advanced design software, then use method of finite element analysis to verify the results.

–Advanced equipment

Base on advanced equipment to ensure product quality, we possess advance processing equipment for key production process, for example, CNC machining center, CNC heat treatment equipment …etc.

–Reliable raw materials

The most important part of ensuring the product quality is raw materials manufacturing, therefore we choose the reliable raw materials to use for element of crossed roller bearing, such as bearing ring and roller etc, we also could provide customize crossed roller bearing with special material.

–Perfect management system

We established perfect management system so to ensure product quality, we passed to certificate ISO9001 quality management system as well as obtain ISO9001 certification, and carry out quality manufacture system strictly for whole process of production from beginning to the end.

–Perfect testing method

We organized a professional and strong testing and inspecting team with advanced test equipment by perfect testing method to guarantee product quality and set up special testing machine and test bed for crossed roller bearing.

If you need formal drawing , please contact with us