OEM/ODM Series 30300-Single Row Tapered Roller Bearings Company, Factory

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Series 30300-Single Row Tapered Roller Bearings

Metric Series
Inch series

Design Variants
Cage
Tolerance
Internal clearance

Additional the standard metric single row taper roller bearings listed in the bearing table, DHK also produced single row taper roller bearings with flanges on outer rings (suffix R), only outer rings of taper roller bearing (prefix L), inner rings with the cage and rollers (prefix R) and other special taper roller bearings according to customer

Due to the single row taper roller bearings only can accommodate one direction axial force, these bearings are frequently used as pairs. Upon request, DHK can provide these bearings at Face- to-Face arrangement (suffix DF), Back-to-Back arrangement (suffix DB) or in tandem arrangement (suffix DT), as shown in the below sketch.
DHK taper roller bearings are fitted with pressed steel cages as standard. Because the cages of taper roller bearings usually protrude beyond the bearing faces, special care must be taken to follow the recommended abutment dimensions.

DHK single row taper roller bearings are produced to normal tolerance class (PN) as standard.

These bearings also may be produced with closer tolerance such as P6X on request.

Detail tolerance values are listed in the chapter of tolerance of metric taper roller bearings, page 14. The width tolerance of paired bearings is decided by the clearance and Ts.

Tolerances for DHK metric taper roller bearings (excluding tapered roller bearings)

All dimensions shown in (mm):

Tolerances in (um):

Inner Ring

Tolerance class PN/(Normal)


Nominal bore diameter		Deviation	Variation	Variation	Ring width deviation	Radial runout	Ring width deviation
<=	<=	△dmp	Vdp	Vdmp	△Bs	Kia	△Ts	△T1s	△T2s
10 18		0 -12	12	9	0 -120	15	+2000	+1000	+1000
18 30		0 -12	12	9	0 -120	18	+2000	+1000	+1000
30 50		0 -12	12	9	0 -120	20	+2000	+1000	+1000
50 80		0 -15	15	11	0 -150	25	+2000	+1000	+1000
80 120		0 -20	20	15	0 -200	30	+200 -200	+100 -100	+100 -100
120 180		0 -25	25	19	0 -250	35	+350 -250	+150 -150	+200 -100
180 250		0 -30	30	23	0 -300	50	+350 -250	+150 -150	+200 -100
250 315		0 -35	35	26	0 -350	60	+350 -250	+150 -150	+200 -100
315 400		0 -40	40	30	0 -400	70	+400 -400	+200 -200	+200 -200
400 500		0 -45	45	34	0 -450	85	+400 -400
500 630		0 -50	50	38	0 -500	100	+500 -500
630 800		0 -75	75	56	0 -750	120	+600 -600
800 1000		0 -100	100	75	0 -1000	120	+750 -750
1000 1250		0 -1250			0 -1250	120	+1000 -1000
1250 1600		0 -160			0 -1600	120	+1500 -1500
1600 2000		0 -200			0 -2000	120	+1500 -1500

Outer Ring

Tolerance class PN/(Normal)

Nominal outer diameter		Deviation	Variation	Variation	Radial runout
<=	<=	△Dmp	VDp	VDmp	Kia
18 30		0 -12	12	9	18
30 50		0 -14	14	11	20
50 80		0 -16	16	12	25
80 120		0 -18	18	14	35
120 150		0 -20	20	15	40
150 180		0 -25	25	19	45
180 250		0 -30	30	23	50
250 315		0 -35	35	26	60
315 400		0 -40	40	30	70
400 500		0 -45	45	34	80
500 630		0 -50	50	38	100
630 800		0 -70	70	55	120
800 1000		0 -100	100	75	120
1000 1250		0 -125	125	94	120
1250 1600		0 -160	160	120	120
1600 2000		0 -200			120
2000 2500		0 -250

Tolerances for DHK metric taper roller bearings (excluding tapered roller bearings)

All dimensions shown in (mm):

Tolerances in (um):

Inner Ring

Tolerance class P6X

Nominal bore diameter		Deviation	Variation	Variation	Ring width deviation	Radial runout	Ring width deviation
<=	<=	△dmp	Vdp	Vdmp	△Bs	Kia	△Ts	△T1s	△T2s
10 18		0 -12	12	9	0 -50	15	+100 0	+50～0	+50～0
18 30		0 -12	12	9	0 -50	18	+100 0	+50～0	+50～0
30 50		0 -12	12	9	0 -50	20	+100 0	+50～0	+50～0
50 80		0 -15	15	11	0 -50	25	+100 0	+50～0	+50～0
80 120		0 -20	20	15	0 -50	30	+100 0	+50～0	+50～0
120 180		0 -25	25	19	0 -50	35	+150 0	+50～0	+100～0
180 250		0 -30	30	23	0 -50	50	+150 0	+50～0	+100～0
250 315		0 -35	35	26	0 -50	60	+200 0	+100～0	+100～0
315 400		0 -40	40	30	0 -50	70	+200 0	+100～0	+100～0
400 500
500 630
630 800
800 1000

Outer Ring
Tolerance class P6X

Nominal outer diameter		Deviation	Variation	Variation	Ring width deviation	Radial runout
<=	<=	△Dmp	VDp	VDmp	△Cs	Kea
18 30		0 -12	12	9	0 -100	18
30 50		0 -14	14	11	0 -100	20
50 80		0 -16	16	12	0 -100	25
80 120		0 -18	18	14	0 -100	35
120 150		0 -20	20	15	0 -100	40
150 180		0 -25	25	19	0 -100	45
180 250		0 -30	30	23	0 -100	50
250 315		0 -35	35	26	0 -100	60
315 400		0 -40	40	30	0 -100	70
400 500		0 -45	45	34	0 -100	80
500 630		0 -50	50	38	0 -100	100
630 800
800 1000

The width tolerance △Cs is identical to△Bs of inner ring of the same bearing

Tolerances for DHK metric taper roller bearings (excluding tapered roller bearings)

All dimensions shown in (mm):

Tolerances in (um):

Inner Ring

Tolerance class P5

Nominal bore diameter		Deviation	Variation	Variation	Ring width deviation	Radial runout	Side face runout
<=	<=	△dmp	Vdp	Vdmp	△Bs	Kia	Ｓd	△Ts
10 18		0 -7	5	5	0 -200	5	7	+200 -200
18 30		0 -8	6	5	0 -200	5	8	+200 -200
30 50		0 -10	8	5	0 -240	6	8	+200 -200
50 80		0 -12	9	6	0 -300	7	8	+200 -200
80 120		0 -15	11	8	0 -400	8	9	+200 -200
120 180		0 -18	14	9	0 -500	11	10	+350 -250
180 250		0 -22	17	11	0 -600	13	11	+350 -250
250 315		0 -25	19	13	0 -700	16	13	+350 -250
315 400		0 -30	23	15	0 -800	19	15	+400 -400
400 500		0 -35	26	18	0 -900	22	17	+400 -400
500 630		0 -40	30	20	0 -1000	26	20	+500 -500
630 800		0 -50	50	25	0 -1500	30	26	+600 -600
800 1000		0 -65	60	30	0 -2000	35	32	+750 -750

Outer Ring
Tolerance class P5

Nominal outer diameter		Deviation	Variation	Variation	Radial runout	Outside inclination variation
<=	<=	△Dmp	VDp	VDmp	Kea
18 30		0 -8	6	5	6	8
30 50		0 -9	7	5	7	8
50 80		0 -11	8	6	8	8
80 120		0 -13	10	7	10	9
120 150		0 -15	11	8	11	10
150 180		0 -18	14	9	13	10
180 250		0 -20	15	10	15	11
250 315		0 -25	19	13	18	13
315 400		0 -28	22	14	20	13
400 500		0 -33	25	17	23	15
500 630		0 -38	29	19	25	18
630 800		0 -45	34	23	30	20
800 1000		0 -60	45	30	35	25
1000 1250		0 -80	75	38	40	30
1250 1600		0 -100	90	45	45	35

The width tolerance △Cs is identical to△Bs of inner ring of the same bearing

Tolerances for DHK metric taper roller bearings (excluding tapered roller bearings)
All dimensions shown in (mm):
Tolerances in (um):

Inner Ring
Tolerance class P4

Nominal bore diameter		Deviation	Variation	Variation	Ring width deviation	Radial runout	Side face runout	Side face runout	Ring width deviation
<=	<=	△dmp △ds	Vdp	Vdmp	△Bs	kia	Sd	Sia	△Ts
10 18		0 -5	4	4	0 -200	3	3	3	+200 -200
18 30		0 -6	5	4	0 -200	3	4	4	+200 -200
30 50		0 -7	6	5	0 -240	4	4	4	+200 -200
50 80		0 -8	7	5	0 -300	4	5	4	+200 -200
80 120		0 -10	8	5	0 -400	5	5	5	+200 -200
120 180		0 -13	10	7	0 -500	6	6	7	+350 -250
180 250		0 -15	11	8	0 -600	8	7	8	+350 -250

Outer Ring
Tolerance class P4

Nominal outer diameter		Deviation	Variation	Variation	Radial runout	Outside inclination variation	Side face runout
<=	<=	△Dmp △Ds	VDp	VDmp	Kea	SD	Sea
18 30		0 -6	5	4	4	4	5
30 50		0 -7	5	5	5	4	5
50 80		0 -9	7	5	5	4	5
80 130		0 -10	8	5	6	5	6
130 150		0 -11	8	6	7	5	7
150 180		0 -13	10	7	8	5	8
180 250		0 -15	11	8	10	7	10
250 315		0 -18	14	9	11	8	10
315 400		0 -20	15	10	13	10	13

The width tolerance △Cs and VCs are identical to△Bs and VBs of inner ring of the same bearing

The clearance of single row taper roller bearings is adjusted one bearing against another during mounting.

DHK taper roller bearing pairs arranged face-to- face (suffix DF) and back-to-back(suffix DB) are produced with internal clearance values, as listed in the table below. DHK can provide bearing pairs with special axial clearance upon request.

Axial Internal Clearance Of Paired DHK taper roller bearings,arranged face to face(DF) and back to back(DB)

Bore Dia. (mm)		Axial intcrnal clearance Series（μm）
>	<=	329 Min max	320 Min max X	330 Min max	331，3．2，332，332 Min max	303，323 Min max	313 Min max
-- 30		-- --	80 120	-- --	100 140	130 170	60 100
30 40		-- --	100 140	-- --	120 160	140 180	70 110
40 50		-- --	120 160	180 220	140 180	160 200	80 120
50 65		-- --	140 180	200 240	160 200	180 220	100 140
65 80		-- --	160 200	250 290	180 220	200 260	110 170
80 100		270 310	190 230	350 390	210 270	240 300	110 170
100 120		270 330	220 280	340 400	220 280	280 340	130 190
120 140		310 370	240 300	340 400	240 300	330 390	160 220
140 160		370 430	270 330	340 400	270 330	370 430	180 240
160 180		370 430	310 370	-- --	310 370	390 450	-- --
180 190		370 430	340 400	-- --	340 400	440 500	-- --
190 200		390 450	340 400	-- --	340 400	440 500	-- --
200 225		440 500	390 450	-- --	390 450	490 550	-- --
225 250		440 500	440 500	-- --	440 500	540 600	-- --
250 280		540 500	490 55	-- --	490 550	-- --	-- --
280 300		640 700	540 600	-- --	540 600	-- --	-- --
300 340		640 700	590 650	-- --	590 650	-- --	-- --

Model		Dimensions								Extreme speed		Rated load		Calculation factor			Abutment and fillet dimensions(mm)						Weight [kg]
DIN720	ISO355	d	D	B	C	T	r1,r2 min	r3,r4 min	a	Grease lubrication	Oil lubrication	Dynamic load	Static load	e	Y	Yo	Da max	db min	da min	Db min	Ca min	Cb min	Weight [kg]
30302	T2FB015	15	42	13	11	14.25	1	1	10	10000	15000	23.2	20.8	0.29	2.11	1.16	22	21	36	38	2	3	0.09
30303	T2FB017	17	47	14	12	15.25	1	1	10	9000	13000	29	26.5	0.29	2.11	1.16	25	23	40	42	2	3	0.13
30304	T2FB020	20	52	15	13	16.25	1.5	1.5	11	8000	11000	34.5	33.5	0.3	2	1.1	28	27	44	47	2	3	0.18
30305	T2FB025	25	62	17	15	18.25	1.5	1.5	13	6700	9000	47.5	46.5	0.3	2	1.1	34	32	54	57	2	3	0.27
30306	T2FB030	30	72	19	16	20.75	1.5	1.5	15	5600	7500	60	61	0.31	1.9	1.05	40	37	62	66	3	4.5	0.45
30307	T2FB035	35	80	21	18	22.75	2	2	16	5000	6700	73.5	76.5	0.31	1.9	1.05	45	44	70	74	3	4.5	0.53
30308	T2FB040	40	90	23	20	25.25	2	1.5	20	4300	5600	91.5	102	0.35	1.74	0.96	52	49	77	82	3	5	0.77
30309	T3DB045	45	85	19	16	20.75	1.5	1.5	18	4300	5600	71	83	0.4	1.48	0.81	54	52	74	80	3	4.5	0.5
30309	T2FB045	45	100	25	22	27.25	2	1.5	21	3800	5000	112	127	0.35	1.74	0.96	59	54	86	92	3	5	0.96
30310	T2FB050	50	110	27	23	29.25	2.5	2	23	3600	4800	132	150	0.35	1.74	0.96	65	60	95	102	4	6	1.3
30311	T2FB055	55	120	29	25	31.5	2.5	2	25	3200	4300	153	176	0.35	1.74	0.96	71	65	104	111	4	6.5	1.8
30312	T2FB060	60	130	31	26	33.5	3	2.5	26	3000	4000	176	204	0.35	1.74	0.96	77	72	112	120	5	7.5	2.1
30313	T2GB065	65	140	33	28	36	3	2.5	28	2600	3600	196	288	0.35	1.74	0.96	83	77	122	130	5	8	2.4
30314	T2GB070	70	150	35	30	38	3	2.5	30	2400	3400	224	265	0.35	1.74	0.96	89	82	130	140	5	8	3.1
30315	T2GB075	75	160	37	31	40	3	2.5	32	2200	3200	250	300	0.35	1.75	0.96	95	87	139	149	5	9	3.64
30316	T2GB080	80	170	39	33	42.5	3	2	34	2000	3000	290	345	0.35	1.74	0.96	102	92	148	159	5	9.5	4.34
30317	T2GB085	85	180	41	34	44.5	4	2	36	1900	2800	310	375	0.36	1.74	0.96	107	99	156	167	6	10.5	4.83
30318	T2GB090	90	190	43	36	46.5	4	3	37	1800	2600	335	400	0.35	1.74	0.96	113	104	165	176	6	10.5	5.87
30319	T2GB095	95	200	45	38	49.5	4	3	40	1800	2600	350	440	0.35	1.74	0.96	118	109	172	184	6	11.5	6.77
30320	T2GB100	100	215	47	39	51.5	4	3	42	1700	2400	415	510	0.35	1.74	0.96	127	114	184	197	6	12.5	8.38
30321	--	105	225	49	41	53.5	4	3	--	1600	2200	395	470	0.35	1.7	0.95	136	121	202	202	--	--	9.11
30322	T2GB110	110	240	50	42	54.5	4	3	45	1600	2200	480	585	0.35	1.74	0.96	141	124	206	220	8	12.5	11.1
30324	T2GB120	120	260	55	46	59.5	4	3	48	1500	2000	560	710	0.35	1.74	0.96	152	134	221	237	10	13.5	14.3
30326	T2GB130	130	280	58	49	63.75	5	4	53	1300	1800	600	750	0.35	1.73	0.95	164	148	239	255	8	14.5	17.2
30328	T2GB140	140	300	62	53	67.75	5	4	52	1200	1700	585	735	0.28	2.18	1.2	176	158	255	283	8	14.5	20.5
30330	T2GB150	150	320	65	55	72	5	4	60	1100	1600	800	1020	0.35	1.74	0.96	189	168	273	292	9	17	25.5
30332	T2GB160	160	340	68	58	75	5	4	63	1000	1500	880	1120	0.35	1.74	0.96	201	178	290	310	9	17	29.9
30334	--	170	360	72	62	80	5	4	--	950	1400	845	1080	0.37	1.6	0.9	219	198	326	344	--	--	33.5
30336	--	180	380	75	64	83	5	4	--	950	1400	935	1230	0.36	1.7	0.92	230	209	343	360	--	--	39.3
30340	--	200	420	80	67	89	6	5	--	850	1200	1030	1390	0.37	1.6	0.88	251	229	372	391	--	--	52.3
30344	--	220	460	88	73	97	6	5	--	750	1000	1430	1990	0.36	1.7	0.92	277	254	414	434	--	--	72.4
30348	--	240	500	95	80	105	6	5	--	750	1000	1660	2340	0.36	1.7	0.92	300	277	449	471	--	--	92.6
30352	--	260	540	102	85	113	6	6	--	630	850	2120	3050	0.35	1.7	0.9	286	325	512	493	--	--	110

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1. Design Features of Series 30300 Bearings

The design of Series 30300 Bearings is meticulously engineered to meet the rigorous demands of industrial applications. Each component is crafted with precision to ensure optimal functionality and longevity. One of the key design features lies in the abutment and fillet dimensions, which include Da max, db min, da min, Db min, Ca min, and Cb min. These dimensions play a critical role in determining the proper fitment and alignment of the bearings within the machinery. Da max and db min define the maximum and minimum diameters of the outer and inner ring abutments, respectively. By adhering to these specifications, Series 30300 Bearings guarantee proper contact and alignment between the bearing rings and associated components. This precise fitment minimizes the risk of misalignment or excessive stress, thereby extending the bearing's service life and enhancing operational reliability. Similarly, da min and Db min specify the minimum diameters of the inner and outer ring fillets, ensuring sufficient clearance for smooth rotation. Maintaining adequate fillet dimensions is essential for preventing edge loading and reducing frictional resistance during operation. Series 30300 Bearings excel in this regard, providing optimal clearance to accommodate varying loads and operating conditions effectively. The Ca min and Cb min dimensions establish the minimum chamfer dimensions for the inner and outer rings, respectively. Chamfering facilitates ease of installation and removal while reducing the risk of damage to the bearing or associated components. Series 30300 Bearings feature precisely machined chamfers that streamline assembly processes and enhance overall efficiency.

2. Performance Benefits of Series 30300-Single Row Tapered Roller Bearings

Series 30300 Bearings offer a host of performance benefits that optimize machinery efficiency, reduce maintenance requirements, and enhance overall productivity. One of the primary advantages is their ability to minimize friction and operating temperatures, even under heavy loads. The tapered roller design distributes radial and axial forces evenly, reducing contact stresses and frictional resistance along the bearing surfaces. As a result, Series 30300 Bearings operate with greater efficiency, translating to lower energy consumption and extended equipment lifespan. These bearings exhibit exceptional load-carrying capacity, enabling them to withstand significant radial and axial loads without compromising performance. Whether in automotive transmissions, industrial gearboxes, or heavy machinery applications, Series 30300 Bearings excel in supporting critical loads with precision and reliability. The superior durability of Series 30300 Bearings minimizes downtime and maintenance costs, contributing to enhanced operational efficiency. Their robust construction and advanced materials withstand harsh operating conditions, including shock, vibration, and contamination. This resilience ensures uninterrupted performance, maximizing uptime and productivity for industrial operators.

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What are the key advantages of using Four Row Cylindrical Roller Bearings in heavy-duty applications?

In what types of machinery or systems are paired single-row tapered roller bearings most commonly used?

How does the internal geometry of spherical roller bearings impact their load-carrying capacity?

What are the key benefits of using spherical roller bearings in heavy-duty applications?

How can the misalignment of angular contact ball bearings affect their operational efficiency?

How can improper installation affect the performance of paired single row tapered roller bearings?

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Latest News

What are the key advantages of using Four Row Cylindrical Roller Bearings in heavy-duty applications?

In what types of machinery or systems are paired single-row tapered roller bearings most commonly used?

How does the internal geometry of spherical roller bearings impact their load-carrying capacity?

What are the key benefits of using spherical roller bearings in heavy-duty applications?

How can the misalignment of angular contact ball bearings affect their operational efficiency?

How can improper installation affect the performance of paired single row tapered roller bearings?

Industry Knowledge Expansion

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