Nrxt8016 Cross Roller Slewing Bearing

• Customization: Available
• Rolling Body: Roller Bearings
• The Number of Rows: Single
• Model NO.: NRXT8016
• Outer Dimension: 120mm
• Material: Bearing Steel
• Spherical: Aligning Bearings
• Load Direction: Axial Bearing
• Separated: Separated
• Craft: Grinding
• Transport Package: in Woodeb Box
• Specification: 120*50*16
• Trademark: LYDZC
• Origin: Luoyang China
• HS Code: 4103362175
• Production Capacity: 50000sets/Year

Product Description

NRXT type cross roller bearing (for outer ring division and inner ring rotation) this series of type with RB type cross roller bearing. Is the basic type of cross cylindrical roller bearing, the size of the inner and outer rings is minimized, its structure is the outer ring is split, the inner ring is integrated design, suitable for the requirements of the high accuracy of the inner ring parts.
Structural features of NRXT type cross roller bearing: cross roller bearing is a cylindrical roller in the 90 degree v-shaped groove rolling surface is arranged vertically through the isolation block, so the cross roller bearing can bear radial load, axial load and torque load and other multi-direction load. The size of inner and outer ring is miniaturized, and the extremely thin form is close to the limit of small size, and has high steel, and the accuracy can reach P5, P4, P2. Therefore, it is suitable for the joint part and rotation part of industrial robots, the rotary table of mechanical processing center, precision rotary table, medical machine, calculator, military industry, IC manufacturing device and other equipment.

Series	model	main size						Installation dimension		rated load ()		weight
		d(mm)	D(mm)	dp(mm)	B(mm)	φ	r(min)	ds	Dh	C kN	Co kN	Kg
NRXT	NRXT4010	40	65	51.5	10	1	0.6	47.5	57.5	8.33	10.6	0.16
	NRXT5013	50	80	64	13	1.5	0.6	57.4	72	16.7	20.9	0.27
	NRXT6013	60	90	74	13	1.5	0.6	68	82	18	24.3	0.3
	NRXT7013	70	100	84	13	1.5	1	78	92	19.4	27.7	0.35
	NRXT8016	80	120	98	16	1.5	1	91	111	30.1	42.1	0.7
	NRXT9016	90	130	108	16	1.5	1.5	98	118	31.4	45.3	0.75
	NRXT10020	100	150	123	20	1.5	1.5	113	133	33.1	50.9	1.45
	NRXT11020	110	160	133	20	1.5	1.5	120	143	34	54	1.56
	NRXT12025	120	180	148.7	25	2	1	133	164	66.9	100	2.62
	NRXT13025	130	190	158	25	2	1	143	174	69.5	107	2.82
	NRXT14025	140	200	168	25	2	1.5	154	185	74.8	121	2.96
	NRXT15025	150	210	178	25	2	1	164	194	76.8	128	3.16
	NRXT15030	150	230	188	30	3	2	173	211	100	156	5.3
	NRXT20030	200	280	240	30	3	2.5	221	258	114	200	6.7
	NRXT25025	250	310	277.5	25	2	3	265	290	69.3	150	5
	NRXT25030	250	330	287.5	30	3	3	269	306	126	244	8.1
	NRXT30025	300	360	328	25	2	3	315	340	76.3	178	5.9
	NRXT30035	300	395	345	35	3	3	322	368	183	367	13.4
	NRXT30040	300	405	351.6	40	3.5	3	326	377	212	409	17.2
	NRXT40035	400	480	440.3	35	3	3.5	422	459	156	370	14.5
	NRXT40040	400	510	453.4	40	3.5	1.5	428	479	241	531	23.5
	NRXT50040	500	600	548.8	40	3	3.5	526	572	239	607	26
	NRXT50050	500	625	561.6	50	3.5	3.5	536	587	267	653	41.7
	NRXT60040	600	700	650	40	3	4	627	673	264	721	29

(1) the quenching hardness of raceway surface HRC50 ~ 55, the depth shall not be less than 2.5mm;
(2) raceway surface roughness is Ra0.8;
(3) the roundness tolerance of the inner and outer rings is 0.1;
(4) the plane tolerance of both ends is 0.1, and the parallelism tolerance is 0.2.



2.1 rough machining
After forging, the thick inner ring inside the 1532 vertical bus is left with 15mm ~ 20mm left on each end face and 15mm left on the outer circle. The raceway surface is not processed temporarily.
2.2 conditioning
2.3 semi-finished turning processing
Turn out the inner hole, outer circle, end face and raceway surface of the inner and outer ring with a quantity of 5mm ~ 7mm after tempering and tempering.
2.4 aging
Natural aging 7 ~ 14 days, eliminate the internal stress after semi - finished turning.
2.5 fine car
In 1532 vertical car, fine inside the car, each part of the outer ring diagram, the raceway surface single-side grinding 1mm ~ 1.5mm



2.6 heat treatment
Due to the large size of the inner and outer ring structure, flame surface quenching is adopted. After quenching, the hardness HRC50 ~ 55 and the depth is 4mm.
Grinding of inner and outer rings
Three described above, such as scheme combining 10 m guideway grinder and rotary table, the restructuring of grinding head, complete 45 ° raceway surface grinding.
3.1 requirements for machine tool accuracy
In order to ensure the machining accuracy of each raceway surface of the inner and outer rings, the rotary table must have the precision that meets the machining requirements, and maintain the precision in the grinding process. Before the workpiece is clamped, load the leveling ruler as shown in FIG. 9, and use the level meter to detect the mounting accuracy of the worktable, with the planeness tolerance of 0.02.