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30240JR Tapered Roller Bearing

Single row bearings can bear radial load and unidirectional axial load, and double row bearings can bear radial load and bidirectional axial load.Suitable for bearing heavy load and shock load. According to the different contact Angle (α), it can be divided into three types: small cone Angle, middle cone Angle and large cone Angle. The larger the contact Angle is, the greater the axial load capacity is.

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Tapered Roller Bearings

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30240JR Tapered Roller Bearing

This type of bearing is equipped with a round platform roller, the roller by the inner ring of the large rim.

Single row bearings can bear radial load and unidirectional axial load, and double row bearings can bear radial load and bidirectional axial load.Suitable for bearing heavy load and shock load.
According to the different contact Angle (α), it can be divided into three types: small cone Angle, middle cone Angle and large cone Angle. The larger the contact Angle is, the greater the axial load capacity is.
Outer ring and inner assembly (inner ring and roller and cage assembly) can be separated for easy assembly and disassembly.

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

Bearing steel should have the following properties:

1. High contact fatigue strength.

2. High wear resistance.

3. High elastic limit and yield strength.

4. High and uniform hardness.

5. Certain impact toughness.

6. Good dimensional stability.

7. Good corrosion inhibition performance.

8. Good process performance.

How to install tapered roller bearings?

Adjusting axial clearance For the installation of tapered roller bearing axial clearance can be adjusted by adjusting nuts on the journal, adjusting gaskets and threads in the bearing seat hole, or by pre-tightening springs and other methods. The size of axial clearance is related to the arrangement of bearing installation, the distance between bearings, the material of shaft and bearing seat, and can be determined according to working conditions.

For tapered roller bearings with high load and high speed, the influence of temperature rise on axial clearance must be considered when adjusting clearance, and the reduction of clearance caused by temperature rise must be estimated. That is to say, the axial clearance should be properly adjusted to a larger extent.

For bearings with low speed and bearing vibration, no-clearance installation should be adopted, or pre-load installation should be applied. The purpose is to make the tapered roller bearing roller and raceway have good contact, uniform load distribution, prevent the roller and raceway from vibration impact damage. After adjustment, the size of axial clearance is tested with a micrometer.

OUR FACTORY

We specialize in providing forklift bearings, deep groove ball bearings, self-aligning ball bearings, self-aligning roller bearings, cylindrical roller bearings, tapered roller bearings, wheel hub bearings, agricultural machinery bearings, etc.

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FAQ

Can we take some samples? Any fees?

Yes, we can provide samples free of charge, but we don't pay for shipping. If you place an order after confirming the sample, we will refund your delivery fee or deduct it from the order amount.

Can I visit your factory?

Of course. We welcome customers from all over the world to visit our factory.

Are you a trading company or a manufacturer?

We are a professional bearing production company, but also a very professional bearing trading company Product. We can also provide all kinds of bearing products.

How do you make our business relationship good in the long run?

1. We maintain good quality and competitive prices to ensure the benefit of our customers. 2. We treat every customer as a friend, no matter where they come from, we sincerely do business with them and make friends.

Tapered Roller Bearings