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30236JR List Tapered Roller Bearing

A single-row tapered bearing is usually adequate for the most straightforward applications (e.g., angular forces on a fixed point and with only mild fluctuation). To find the right one, you'll need to determine whether the end-use of the tapered bearing will have more radial or axial loads. There are axial-only tapered roller bearings called thrust tapered bearings that resemble flat rings or disks where the rollers are perpendicular to the bearing bore axis. When multiple bearings are required, it could be advantageous to use two- or more single-row tapered bearings rather than multi-row bearings within a single housing. One such example is if one bearing will need to be maintained, adjusted, or replaced separately from the other. Another is when there is a need to allow for flexibility in design and add or subtract individual single-row tapered bearings, which is impossible with a multi-row tapered bearing.

Classification :

Tapered Roller Bearings

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Single-row tapered roller bearing

Specification parameter：

轴承型号 Bearing No	外形尺寸 Boundary dimensions (mm)			额定负荷 Load Rating (KN)		极限转速 Limiting Speed (rpm)		重量（开式） Weight (Open type)（kg)
轴承型号 Bearing No	d	D	B	Cr	Cor	脂润滑 Grease	油润滑 Oil	重量（开式） Weight (Open type)（kg)
30202	15	35	11					0.053
30203	17	40	13.25	20.8	21.8	9000	12000	0.079
30204	20	47	15.25	28.2	30.5	8000	10000	0.126
30205	25	52	16.25	32.2	37.0	7000	9000	0.154
30206	30	62	17.25	43.2	50.5	6000	7500	0.231
30207	35	72	18.25	54.2	63.5	5300	6700	0.331
30208	40	80	19.75	63.0	74.0	5000	6300	0.422
30209	45	85	20.75	67.8	83.5	4500	5600	0.474
30210	50	90	21.75	73.2	92.0	4300	5300	0.529
30211	55	100	22.75	90.8	115.0	3800	4800	0.713
30212	60	110	23.75	102.0	130.0	3600	4500	0.904
30213	65	120	24.75	120.0	152.0	3200	4000	1.13
30214	70	125	26.25	132.0	175.0	3000	3800	1.26
30215	75	130	27.25	138.0	185.0	2800	3600	1.36
30216	80	140	28.25	160.0	212.0	2600	3400	1.67
30217	85	150	30.5	178.0	238.0	2400	3200	2.06
30218	90	160	32.5	200.0	270.0	2200	3000	2.54
30219	95	170	34.5	228.0	308.0	2000	2800	3.04
30220	100	180	37	255.0	350.0	1900	2600	3.72
30221	105	190	39	285.0	398.0	1800	2400	4.38
30222	110	200	41	315.0	445.0	1700	2200	5.21
30302	15	42	13	22.8	21.5	9000	12000	0.098
30303	17	47	15.25	28.2	27.2	8500	11000	0.129
30304	20	52	16.25	42.8	33.2	7500	9500	0.165
30305	25	62	18.25	46.8	48.0	6300	8000	0.263
30306	30	72	20.75	59.0	63.0	5600	7000	0.387
30307	35	80	22.75	75.2	82.5	5000	6300	0.515
30308	40	90	25.25	90.8	108.0	4500	5600	0.747
30309	45	100	27.25	108.0	130.0	4000	5000	0.984
30310	50	110	29.25	130.0	158.0	3800	4800	1.28
30311	55	120	31.5	152.0	188.0	3400	4300	1.63
30312	60	130	33.5	170.0	210.0	3200	4000	1.99
30313	65	140	36	195.0	242.0	2800	3600	2.44
30314	70	150	38	218.0	272.0	2600	3400	2.98
30315	75	160	40	252.0	318.0	2400	3200	3.57
30316	80	170	42.5	278.0	352.0	2200	3000	4.27
30317	85	180	44.5	305.0	388.0	2000	2800	4.96
30318	90	190	46.5	342.0	440.0	1900	2600	5.8

What types of loads can tapered roller bearings handle?

The angled and tapered shape of tapered roller bearings minimizes the stress caused by a combination of radial and axial loads. Radial and axial loads often combine to create different loads upon a bearing assembly. The ability to handle angular loads and changing angular loads – makes tapered roller bearings indispensable to various technical designs and industries. The tapered shape essentially concentrates radial and axial loads into a unified load that is more easily harnessed. Which angular loads can be harnessed depends on the precise angle of the tapered bearing. They can harness a comprehensive range of forces by configuring two or even more tapered bearings.

The steepness of the roller bearing's gradient increases the thrust/axial load it can handle, while a shallow angle increases the radial load capacity. As the radial load increases, the bearing experiences more stress against the sides of the bearing raceways. A more shallow angle minimizes stress, reducing pressure on the rollers. Increased axial load contributes to the stress applied to the top of the rollers. A steeper angle will distribute the pressure more towards the center of the bearing and less onto the rollers themselves.

Common uses of tapered roller bearings

A tapered roller bearing is appropriate wherever a bearing must handle combination loads. One of the most common uses is maintaining axial balance, achieved with multiple tapered roller bearings along an axle or shaft. The tapered bearings will evenly distribute loads when adequately aligned, minimizing wear and tear on the components. With higher surface area, tapered roller bearings can distribute friction and heat from combination loads more efficiently than non-tapered rollers (which are more efficient than tapered bearings only with the most straightforward non-combination forces). This reduced friction increases the rotational speed of interfacing parts and makes tapered roller bearings ideal for use in:

Engines
Motors
Gearboxes (especially those with helical gears)
Wheels & axles
Turbines & propellers

This equipment must combine many different angles and utilize them to drive motors, driveshafts, and other rotational components.

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APPLICATION AREAS

It is mainly used to support the rotating body, reduce friction during movement, and ensure the rotation accuracy of the machine. They are widely used in many fields, machinery manufacturing, automobile industry, electric power industry, aerospace industry, railway transportation. Such as train wheel bearings and train wheel bearings, etc., play an important role in the operation of trains.

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