BRT Rotary Table Bearings

The BRT rotary table bearing consists of a thrust or radial seat ring, or a radial shaft ring, a thrust washer, two needle roller cage assemblies and a set of radial cylindrical rollers. The seat ring and the shaft ring have uniform installation holes Screw hole, BRT series turntable bearings have high axial and radial load capacity, high tilting rigidity and high precision. It can be used in rotary table, chuck and iron cutter head, as well as bearing configuration in measurement and experiment. YRT series turntable bearings also have high requirements for matching equipment parts, and the tightening torque of the mounting screws must be controlled during installation.

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Product Parameter

BRT rotary table bearing parameters

Sectional drawing of YRT series rotary table bearing

Model Number	Boundary Dimensions								Basic Load Rating(KN)				Limiting Speed(grease)	Weight(Kg)
	Boundary Dimensions								Axial Load		Radial Load
	d	D	H	H1	C	D1	J	J1	Dynamic	Static	Dynamic	Static
	Unit: mm								Ca	Coa	Cr	Cor	r/min
BRT50	50	126	30	20	10	105	63	116	38	158	28.5	49.5	440	1.6
BRT80	80	146	35	23.35	12	130	92	138	56	255	42.5	100	530	2.4
BRT100	100	185	38	25	12	160	112	170	76.5	415	47.5	120	430	4
BRT120	120	210	40	26	12	184	135	195	102	540	52	143	340	5.3
BRT150	150	240	40	26	12	214	165	225	112	630	56	170	320	6.2
BRT180	180	280	43	29	15	244	194	260	118	710	69.5	200	280	7.7
BRT200	200	300	45	30	15	274	215	285	120	765	81.5	220	260	9.7
BRT260	260	385	55	36.5	18	345	280	365	160	1060	93	290	200	18.3
BRT325	325	450	60	40	20	415	342	430	275	1930	120	345	170	25
BRT395	395	525	65	42.5	20	486	415	505	300	2280	186	655	140	33
BRT460	460	600	70	46	22	560	482	580	355	2800	200	765	120	45
BRT580	580	750	90	60	30	700	610	720	490	4250	228	965	80	89
BRT650	650	870	122	78	34	800	680	830	1040	8000	490	1800	65	170
BRT850	850	1095	124	80.5	37	1018	890	1055	1000	8650	455	1730	50	253
BRT950	950	1200	132	86	40	1130	990	1160	1290	11400	530	2040	40	312
BRT1030	1030	1300	145	92.5	40	1215	1075	1255	1380	12000	620	2650	39	375

Fixed hole BRT rotary table bearing parameters

Sectional view of fixed hole YRT series rotary table bearing

Model Number	Fixing Holes									Pitches	Tightening Torque	Frictional Torque	Rotation Accuracy
	Holes of Inner Ring				Holes of Inner Ring
	Fixing holes					Fixing Holes		Extraction thread hole
	d1	d2	a	Quantity		d3	Quantity	G	Quantity	Quantity × t	Nm	Nm	μm
	mm			Quantity		mm	Quantity	G	Quantity	Quantity × t	Nm	Nm	μm
BRT50	5.6	一	一	12		5.6	12	一	一	12×30°	8.5	2.5	2
BRT80	5.6	10	4	12		4.6	12	一	一	12x30°	8.5	3	3
BRT100	5.6	10	5.4	18		5.6	15	M5	3	18×20°	8.5	3	3
BRT120	7	11	6.2	24		7	21	M8	3	24×15°	14	7	3
BRT150	7	11	6.2	36		7	33	M8	3	36×10°	14	10	3
BRT180	7	11	6.2	48		7	45	M8	3	48×7.5°	14	12	4
BRT200	7	11	6.2	48		7	45	M8	3	48×7.5°	14	14	4
BRT260	9.3	15	8.2	36		9.3	33	M12	3	36×10°	34	20	6
BRT325	9.3	15	8.2	36		9.3	33	M12	3	36×10°	34	40	6
BRT395	9.3	15	8.2	48		9.3	45	M12	3	48×7.5°	34	55	6
BRT460	9.3	15	8.2	48		9.3	45	M12	3	48×7.5°	34	70	6
BRT580	11.4	18	11	48		11.4	42	M12	6	48×7.5°	68	140	10
BRT650	14	20	13	48		14	42	M12	6	48×7.5°	116	200	10
BRT850	18	26	17	60		18	54	M16	6	60×6°	284	300	12
BRT950	18	26	17	60		18	54	M16	6	60×6°	284	600	12
BRT1030	18	26	17	72		18	66	M16	6	72×5°	284	800	12

BRT rotary table bearing shaft fit tolerance

Sectional drawing of YRT rotary table bearing with shaft journal

Model Number	(mm) Shaft Diameter			Roundness	PerpendicUlarity	Parallelism	Roughness
Model Number	Nominal Dimension	Upper	Lowe	t1(μm)	t3(μm)	t4(μm)	Ra(μm)
BRT50	50	0	-0.011	4	3	3	0.4
BRT80	80	0	-0.013	5	3	3	0.4
BRT100	100	0	-0.015	6	4	4	0.4
BRT120	120	0	-0.015	6	4	4	0.4
BRT150	150	0	-0.018	8	5	5	0.8
BRT180	180	0	-0.018	8	5	5	0.8
BRT200	200	0	-0.02	10	7	7	0.8
BRT260	260	0	-0.023	12	8	8	0.8
BRT325	325	0	-0.025	13	9	9	0.8
BRT395	395	0	-0.025	13	9	9	0.8
BRT460	460	0	-0.027	15	10	10	0.8
BRT580	580	0	-0.028	16	11	11	1.6
BRT650	650	0	-0.032	18	12	12	1.6
BRT850	850	0	-0.036	20	14	14	1.6
BRT950	950	0	-0.036	20	14	14	1.6
BRT1030	1030	0	-0.045	25	16	16	1.6

BRT rotary table bearing seat tolerance

Sectional view of YRT rotary table bearing mating seat

Model Number	(mm)Housing Diameter			Roundness	PerpendicUlarity	Parallelism	Roughness
Model Number	Nominal Dimension	Upper	Lowe	t1(μm)	t3(μm)	t4(μm)	Ra(μm)
BRT50	126	0.018	-0.007	8	5	5	0.8
BRT80	146	0.018	-0.007	8	5	5	0.8
BRT100	185	0.022	-0.007	10	7	7	0.8
BRT120	210	0.022	-0.007	10	7	7	0.8
BRT150	240	0.022	-0.007	10	7	7	0.8
BRT180	280	0.025	-0.007	12	8	8	0.8
BRT200	300	0.025	-0.007	12	8	8	0.8
BRT260	385	0.029	-0.007	13	9	9	0.8
BRT325	450	0.033	-0.007	15	10	10	0.8
BRT395	525	0.034	-0.01	16	11	11	1.6
BRT460	600	0.034	-0.01	16	11	11	1.6
BRT580	750	0.038	-0.012	18	12	12	1.6
BRT650	870	0.044	-0.012	20	14	14	1.6
BRT850	1095	0.052	-0.014	24	16	16	1.6
BRT950	1200	0.052	-0.014	24	16	16	1.6
BRT1030	1300	0.06	-0.016	27	18	18	1.6