31300 Series Tapered Roller Bearing

ISUTAMI tapered roller bearings 31300 Series belong to the separated type bearings, and the inner and outer rings of the bearings have conical row raceways.When the bearing is running, if there is rhythmic knocking or bumping sound, it may be caused by spalling, indentation, or improper installation of other parts of the cylindrical roller bearing.In the running process of conical roller bearing, the sound of "gu-lu, gu-lu" may be caused by poor seal of the bearing, dirty lubricating oil and too large clearance of the bearing.The squealing sound of "squeaking" may be caused by dry lubricant or lack of lubricant.If the bearing has the sound of "rustling", it may be that the tapered roller bearing is not clean, the internal mixed with debris, sand, dust and other debris caused by.The inner ring of the bearing expands excessively under heat, and the bearing and seal parts rub against the relevant parts.Striking the bearing or other parts causes the bearing to deform.The fixing sleeve of the bearing is too tight or loose;The large size of the bearing block may cause the outer ring of the bearing to rotate in the bearing block, which may cause the bearing to produce noise and abnormal sound.The cause of vibration of tapered roller bearing is basically the same as that of bearing noise and abnormal sound, and there is a strong correlation between them.However, the vibration frequency outside the audio range will not cause noise and abnormal sound.

31300 Series Tapered Roller Bearing Size Chart

Bearing	Principal Dimensions (mm)					Mass
No.	d	D	T	B	C	kg
31304	20	52	16.25	15	11	0.175
31305	25	62	18.25	17	13	0.26
31306	30	72	20.75	19	14	0.39
31307	35	80	22.75	21	15	0.52
31308	40	90	25.25	23	17	0.72
31309	45	100	27.25	25	18	0.95
31310	50	110	29.25	27	19	1.2
31311	55	120	31.5	29	21	1.55
31312	60	130	33.5	31	22	1.9
31313	65	140	36	33	23	2.35
31314	70	150	38	35	25	2.95
31315	75	160	40	37	26	3.5
31316	80	170	42.5	39	27	4.05
31317	85	180	44.5	41	28	4.6
31318	90	190	46.5	43	30	5.9
31319	95	200	49.5	45	32	6.95
31320	100	215	56.5	51	35	8.6
31321	105	225	58	53	36	9.65
31322	110	240	63	57	38	12
31324	120	260	68	62	42	15.3
31326	130	280	72	66	44	19.1
31328	140	300	77	70	47	23
31330	150	320	82	75	50	28

31300 Series Tapered Roller Bearing Features

Bearing rolling sound is cone roller bearing in all occasions may occur, if the harsh metal friction sound, mostly occurs in the grease lubrication of the larger type of bearings, but in the base oil performance of the poor grease is more likely to occur, generally does not occur when the oil lubrication.In winter, it is easy to occur, when bearing pure radial load, it is easy to occur in the case of large radial clearance, and with the difference of model size, it is easy to occur in a specific speed range, both continuously and intermittently.Adopting special processing method for outer ring raceway can prevent the occurrence of rolling sound. If necessary, this kind of high-temperature bearing can be selected, or the radial clearance of the bearing can be reduced appropriately, the excellent grease can be used, and the rigidity of the matching parts with tapered roller bearing can be improved.

The choice of low noise bearings, this depends on the purchase of high quality conical roller bearings, generally good bearings are made of high material steel, with high density, high tolerance characteristics.From the bearing application link to try to eliminate noise, is in the above lubrication grease, must choose good lubrication materials, can play a multiplier effect.Avoid resonance with main engine, avoid resonance sensitive speed.This point requires professional installation and debugging to avoid resonance problems.If other methods fail, additional measures of sound insulation and muffler are taken, some sound control equipment is installed, etc.