32000 Series

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UMZ Metric Tapered Roller Bearings

1. Product Overview
UMZ metric tapered roller bearings are designed and manufactured in accordance with ISO standards. With tapered raceways on both the inner and outer rings, these bearings can carry combined loads (radial and single-direction axial loads). Their separable design allows the cone assembly (inner ring, rollers, and cage) and the cup (outer ring) to be mounted independently, ensuring convenient installation and adjustment.

2. Design Features

Adjustable contact angle – preload and clearance can be adjusted to optimize stiffness and bearing life.
High load capacity – long rollers with large contact areas provide excellent performance under heavy loads.
Low friction operation – precision-ground raceways and roller ends reduce heat and wear.
Global interchangeability – fully compliant with international metric standards, ensuring compatibility with major global brands.

3. Common Metric Series
UMZ offers a wide range of metric tapered roller bearings to meet diverse applications:

30000 Series – lightweight design, ideal for automotive transmissions and small machinery.
31000 Series – higher load capacity, widely used in trucks and tractors.
32000 Series – versatile series, suitable for automotive wheel hubs and construction equipment.
33000 Series – extra capacity for heavy-duty machinery and industrial gearboxes.
33100 / 33200 Series – larger contact angle, optimized for higher axial loads.

4. Applications

Automotive: wheel hubs, transmissions, differentials, and driveline systems.
Industrial machinery: gearboxes, reducers, pumps, compressors.
Construction & mining equipment: crushers, conveyors, cranes.
Heavy-duty industries: steel mills, port machinery, wind turbines.

5. Quality & Standards

Material: premium GCr15 (100Cr6) high carbon chromium bearing steel.
Heat treatment: advanced vacuum hardening for durability and wear resistance.
Precision grades: ISO 492 standards, available in P0, P6, and P5.
Certifications: UMZ production facilities are certified to ISO 9001 and IATF 16949, ensuring global automotive and industrial quality compliance.

6. UMZ Advantages

Complete range of metric tapered roller bearings for automotive and industrial needs.
Precision engineering for low noise, high reliability, and long service life.
OEM/ODM support, customized solutions available.
Strong export experience – UMZ bearings are trusted in over 60 countries worldwide.

select	Inquiry	Bearing No.	Dimensions （mm）			Basic Load Rating（KN）		Pu	Rotation Speed（rpm）		Weight (Kg)	ISO335	Dimensions （mm）							Installation Dimensions（mm）									Value
select	Inquiry	Bearing No.	d1	D	B	Cr	Cor	Pu	Speed Grade	Speed Limit	Weight (Kg)	Dimensions (ABMA)	d	d1～	B	C	r1,2(min)	r3,4(min)	a	da(max)	db(min)	Da(min)	Da(max)	Db(min)	Ca(min)	Cb(min)	ra(max)	rb(max)	e	Y	Yo
		32008/38X/Q	38	68	19	60	71	7,65	7500	10000	0,28	-	38	54,2	19	14,5	1	1	15	46	44	60	62	65	4	4,5	1	1	0,37	1,6	0,9
		320/32X/Q	32	58	17	42,5	46,5	4,8	9000	11000	0,19	4CC	32	45,6	17	13	1	1	14	38	38	50	52	55	3	4	1	1	0,46	1,3	0,7
		32006X/Q	30	55	17	40,5	44	4,55	10000	12000	0,17	4CC	30	43	17	13	1	1	13	35	36	48	49	52	3	4	1	1	0,43	1,4	0,8
		320/28X/Q	28	52	16	36,5	38	4	10000	13000	0,15	4CC	28	40,3	16	12	1	1	12	34	34	45	46	49	3	4	1	1	0,43	1,4	0,8
		32005X/Q	25	47	15	31	32,5	3,25	12000	14000	0,11	4CC	25	36,5	15	11,5	0,6	0,6	11	30	30	40	42	44	3	3,5	0,6	0,6	0,43	1,4	0,8
		320/22X	22	44	15	25,1	29	2,85	11000	15000	0,10	3CC	22	33,3	15	11,5	0,6	0,6	11	27	27	38	39	41	3	3,5	0,6	0,6	0,40	1,5	0,8
		32004X/Q	20	42	15	28	27	2,7	13000	16000	0,097	3CC	20	31,1	15	12	0,6	0,6	10	25	25	36	37	39	2	3	0,6	0,6	0,37	1,6	0,9
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