Home>Bearing knowledge>Analysis of the "five major problems and causes" in the work of imported bearings

/*728*90 created on 2018/5/16*/ var cpro_id = "u3440131";

Analysis of the "Five Major Faults and Causes" in the Work of Imported Bearings

Source: Bearing network time: 2014-08-18

/*250*250 was created on 2017/12/25*/ var cpro_id = 'u3171089';

Check that the project has poor work due to foreign objects, scratches and indentations; the equipment is not good; the torque generated by the equipment seat is not stable; the torque is too large due to too small clearance, equipment error, seal conflict, etc. If there is no abnormality, you can start to remind you that the large machinery can't be rotated manually; therefore, the power is blocked immediately after the no-load start; the machine is idling; check whether there is oscillation, noise, whether the rotating parts can touch, etc.; Enter the power work.
Power work; starting from no-load low-speed; slowly progressing to additional work for the specified conditions. Check the items in the test work; whether there are abnormal sounds, changes in the temperature of the imported bearings, leakage or discoloration of the smoothing agent, etc. If found Abnormal; should work intermittently; view the machinery; if necessary, remove the bearing to view.
Imported bearing temperature; generally can be estimated according to the external temperature of the bearing housing. However, the oil hole is used to directly measure the temperature of the outer ring of the bearing. The bearing temperature is gradually increased from the beginning of the working; the temperature is stable after 1~2 hours. If the bearing is stable The equipment is bad; the temperature will rise sharply; the abnormal temperature will be abnormal. The reasons are such as excessive smoothing agent, too small bearing clearance, poor equipment, excessive conflict of sealing equipment, etc. High-speed rotating occasions; faulty selection of imported bearing layout and smoothing method Etc. is also the reason.
The transition sound of imported bearings is viewed with a stethoscope, etc.; there are strong metal noise, abnormal sounds, irregular sounds, etc. to clarify the abnormality. The reasons are poor smoothness, poor accuracy of the shaft or bearing housing, bearing damage, foreign matter intrusion, etc.
The bearing trading network professor reminds you that the common problems of imported bearings are as follows:
1. Appearance strain: The cutting abrasive grains are found in the iron spectrum, and the abrasive grains are non-ferrous metals.
2, the external appearance of the journal: There are iron-based cutting abrasive black oxide particles in the iron spectrum, and there is tempering color on the metal surface.
3, the outer surface of the journal corrosion: spectral analysis found that the concentration of iron is abnormal, the iron spectrum has many iron submicron particles, smooth oil moisture overrun or acid value overrun.
4, tile surface corrosion: spectral analysis found that the concentration of non-ferrous metal elements is abnormal, the iron spectrum presents a number of non-ferrous metal components of sub-micron wear particles, smooth oil moisture overrun, acid value overrun.
5, fretting wear on the tile back: Spectral analysis found that the iron concentration is abnormal, there are many iron components in the iron spectrum sub-micron wear particles, smooth oil moisture and acid value is abnormal.
Under the condition of smooth liquid, the sliding surface is separated by smooth oil without direct touch, and the collision loss and appearance wear can be greatly reduced. The oil film also has a certain vibration absorption ability.

Recommend to friends comments close window

Bearing related knowledge

How to look at the appearance of SKF bearings? Types and methods of application of spherical bearings. The most common methods for bearing quality identification. The functions of the special spherical roller bearings of the solid-inlaid self-smooth bearing series, such as the public service, clearance, smooth oil groove, etc.

This article links to http://
Please indicate China Bearing Network http://

Previous:The layout features of the five major types of bearings in plastic machinery Next: Bearing clearance, overhaul and discrimination

The mechanical transmission device in the reciprocating movement of the more, will lead to very large abrasion of random cable. Nylon drag chain (Nylon Cable Drag Chain) is one of the most important in the facilities in the operation of the complete protection to the cable, and can supply after mechanical traction.

Nylon Drag Chain (Nylon Cable Drag Chain), has the high pressure and tensile load, good toughness and high elasticity and abrasion resistance, flame retardant, high and low temperature performance is stable, can be used in outdoor. The use of nylon content decided to Drag Chain strength and wear resistance as well as the running noise size.

Nylon drag chains (Nylon cable drag chain) are resistance to oil, salt, and have certain ability of acid and alkali resistance.

Nylon drag chain (Nylon cable drag chain) inspection method:

1. Make the nylon drag chain (Nylon cable drag chain) against the sun, If you can see the reflected light even without astigmatism, then the drag chain materials evenly, the quality is good.

2. Touch each edges and the surface of nylon drag chain (Nylon cable drag chain), if you don't prick the hand and feeling smooth, you can determine the production with minimal error range of mould.

3. Rub the surface of the nylon drag chain (Nylon cable drag chain) with wood, if the drag chain surface soon appeared pits, and there are the shape of clastic makings falls off, we can judge the raw material of nylon drag chain (Nylon cable drag chain) with poor quality. If you feel very difficult when rub drag chain, pits appeared and falling debris in short filaments, we can determine the raw materials of the nylon drag chain (nylon cable drag chain) joined the high strength material such as glass fiber, which make its wear resistance is higher.

Raw materials are fundamental in determining the quality of engineering plastic drag chain ((plastic cable drag chain)), so the quality of raw materials is a key point. At the time of manufacture, we choose the original package materials as raw materials and can`t add recycling of used materials. This will increase the drag chain itself toughness, reduce the damage caused by low temperature, and reduce the emergence of the problem.

nylon drag chain

1. XDTLF25 Nylon Drag Chain (XDTLF25 Nylon Cable Drag Chain)

Provide the parameters: Quantity (pc.), length of the chain, width of the chain, bending radius, height of the chain

Inside Diameter (height*width) (mm)	Outside Diameter (height*width) (mm)	Bending radius (mm)	Pitch (mm)	Non-support length (mm)	Type	Width of the chain (mm)
25*25	40*45	50/ 65/ 75/ 100/ 125	50	3.6	4piece Both lids can be opened Bridge type Totally enclosed	25
25*38	40*58					38
25*50	40*70					50
25*57	40*77					57
25*60	40*80					60
25*70	40*90					70
25*75	40*95					75
25*80	40*100					80
25*100	40*120					100
25*125	40*145					125

2. XDTLX25 Nylon Drag Chain (XDTLX25 Nylon Cable Drag Chain)

Provide the parameters: Quantity (pc.), length of the chain, width of the chain, bending radius, height of the chain

Inside Diameter (height*width) (mm)	Outside Diameter (height*width) (mm)	Bending radius (mm)	Pitch (mm)	Non-support length (mm)	Type	Width of the chain (mm)
25*25	40*45	50/ 65/ 75/ 100/ 125	50	2.6	4piece Both lids can be opened Bridge type Totally enclosed	25
25*38	40*58					38
25*50	40*70					50
25*57	40*77					57
25*60	40*80					60
25*70	40*90					70
25*75	40*95					75
28*80	40*100					80
25*100	40*120					100
25*125	40*145					125

3. XDTLF30 Nylon Drag Chain (XDTLF30 Nylon Cable Drag Chain)

Provide the parameters: Quantity (pc.), length of the chain, width of the chain, bending radius, height of the chain

Inside Diameter (height*width) (mm)	Outside Diameter (height*width) (mm)	Bending radius (mm)	Pitch (mm)	Non-support length (mm)	Type	Width of the chain (mm)
30*38	45*50	55/ 65/ 75/ 100/ 125	50	3.1	4piece Bridge type Totally enclosed	38
30*50	45*70					50
30*57	45*75					57
30*60	45*80					60
30*70	45*90					70
30*75	45*95					75
30*80	45*100					80
30*100	45*125					100
30*125	45*150					125

4. XDTLX30 Nylon Drag Chain (XDTLX30 Nylon Cable Drag Chain)

Provide the parameters: Quantity (pc.), length of the chain, width of the chain, bending radius, height of the chain

Inside Diameter (height*width) (mm)	Outside Diameter (height*width) (mm)	Bending radius (mm)	Pitch (mm)	Non-support length (mm)	Type	Width of the chain (mm)
30*38	45*50	55/ 65/ 75/ 100/ 125	50	3.1	4piece Bridge type Totally enclosed	38
30*50	45*70					50
30*57	45*75					57
30*60	45*80					60
30*70	45*90					70
30*75	45*95					75
30*80	45*100					80
30*100	45*125					100
30*125	45*150					125

5. XDTLF25Ã—30 .XDTLF30Ã—30 Nylon Drag Chain (XDTLF25Ã—30 .XDTLF30Ã—30 Nylon Cable Drag Chain)

Provide the parameters: Quantity (pc.), length of the chain, width of the chain, bending radius, height of the chain

Inside Diameter

(height*width)

(mm)

Outside Diameter

(height*width)

(mm)

Bending radius

(mm)

Pitch

(mm)

Non-support length

(mm)

Type

Width of the chain

(mm)

25*30

40*50

55/

65/

3.5

4piece

Totally enclosed

30*30

40*50

6. XDTLF35 Nylon Drag Chain (XDTLF35 Nylon Cable Drag Chain)

Provide the parameters: Quantity (pc.), length of the chain, width of the chain, bending radius, height of the chain

Inside Diameter (height*width) (mm)	Outside Diameter (height*width) (mm)	Bending radius (mm)	Pitch (mm)	Non-support length (mm)	Type	Width of the chain (mm)
35*38	50*61	75/ 100/ 125/ 150	60	5	4piece Bridge type Totally enclosed	38
35*50	50*73			5		50
35*57	50*80			5		57
35*60	50*83			4		60
35*70	50*93			4		70
35*75	50*98			4		75
35*80	50*103			3.5		80
35*100	50*125			3.5		100
35*125	50*150			3		125

7. XDTLX35 Nylon Drag Chain (XDTLX35 Nylon Cable Drag Chain)

Provide the parameters: Quantity (pc.), length of the chain, width of the chain, bending radius, height of the chain

Inside Diameter (height*width) (mm)	Outside Diameter (height*width) (mm)	Bending radius (mm)	Pitch (mm)	Non-support length (mm)	Type	Width of the chain (mm)
35*50	55*75	75/ 100/ 125/ 150	66	5	4piece Bridge type Totally enclosed	50
35*75	55*100			5		75
35*100	55*125			4		100
35*125	55*150					125
35*150	55*175					150
35*175	55*200					175
35*200	55*225					200

8. XDTLF45 Nylon Drag Chain (XDTLF45 Nylon Cable Drag Chain)

Provide the parameters: Quantity (pc.), length of the chain, width of the chain, bending radius, height of the chain

Inside Diameter (height*width) (mm)	Outside Diameter (height*width) (mm)	Bending radius (mm)	Pitch (mm)	Non-support length (mm)	Type	Width of the chain (mm)
45*75	70*105	100/ 125/ 150/ 200	70	5	4piece Bridge type Totally enclosed	75
45*100	70*130			5		100
45*115	70*145			4		115
45*125	70*155			4		125
45*150	70*180			4		150
45*175	70*205			3		175
45*200	70*230			3		200

9. XDTLX45 Nylon Drag Chain (XDTLX45 Nylon Cable Drag Chain)

Provide the parameters: Quantity (pc.), length of the chain, width of the chain, bending radius, height of the chain

Inside Diameter (height*width) (mm)	Outside Diameter (height*width) (mm)	Bending radius (mm)	Pitch (mm)	Non-support length (mm)	Type	Width of the chain (mm)
45*50	62*78	75/ 100/ 125/ 150	70	5.5	4piece Bridge type Totally enclosed	50
45*75	62*103			5.5		75
45*100	62*128			4.5		100
45*125	62*153					125
45*150	62*178					150
45*175	62*203					175
45*200	62*228					200

10. XDTLF56 Nylon Drag Chain (XDTLF56 Nylon Cable Drag Chain)

Provide the parameters: Quantity (pc.), length of the chain, width of the chain, bending radius, height of the chain

Inside Diameter (height*width) (mm)	Outside Diameter (height*width) (mm)	Bending radius (mm)	Pitch (mm)	Non-support length (mm)	Type	Width of the chain (mm)
56*75	80*107	150/ 200/ 250/ 300	100	6	4piece Bridge type Totally enclosed	75
56*100	80*132			6		100
56*125	80*157			6		125
56*150	80*180			5		150
56*175	80*207			5		175
56*200	80*232			5		200
56*250	80*282			4		250
56*300	80*332			4		300

11. XDTLF65 Nylon Drag Chain (XDTLF65 Nylon Cable Drag Chain)

Provide the parameters: Quantity (pc.), length of the chain, width of the chain, bending radius, height of the chain

Inside Diameter (height*width) (mm)	Outside Diameter (height*width) (mm)	Bending radius (mm)	Pitch (mm)	Non-support length (mm)	Type	Width of the chain (mm)
65*75	90*110	150/ 200/ 250/ 300/ 350	100	6	4piece Bridge type Totally enclosed	75
65*100	90*135			6		100
65*125	90*160			6		125
65*150	90*185			6		150
65*175	90*210			5		175
65*200	90*235			5		200
65*250	90*285			5		250
65*300	90*335			4		300

12. XDTLF80 Nylon Drag Chain (XDTLF80 Nylon Cable Drag Chain)

Provide the parameters: Quantity (pc.), length of the chain, width of the chain, bending radius, height of the chain

Inside Diameter (height*width) (mm)	Outside Diameter (height*width) (mm)	Bending radius (mm)	Pitch (mm)	Non-support length (mm)	Type	Width of the chain (mm)
80*75	108*125	200/ 250/ 300/ 350/ 400	110	8	4piece Bridge type Totally enclosed	75
80*100	108*150			8		100
80*125	108*175			8		125
80*150	108*200			7		150
80*175	108*225			7		175
80*200	108*250			7		200
80*250	108*300			6		250
80*300	108*350			6		300

Nylon Drag Chain

Nylon Drag Chain,Nylon Cable Drag Chain,Cable Drag Chain,CNC Machine Drag Chain,Protection Cable Drag Chain

HEBEI HANMAC MACHINE CO., LTD. , https://www.chinahanmac.com