1045 WATERPROOF TROUGH CONVEYOR ROLLERS WITH DOUBLE SEALED BEARING

QINYI ROLLER

1.Overview

 

HEBEI QINYI CONVEYING EQUIPMENT CO.,LTD  has carried on the research and development by taking the international advanced structure of the roller as well as the standard of belt conveyor in our country as the foundation. Here introduce you the wide scope of application,good environmental adaptability, one-time oil, labyrinth seal, with 30000 hours’ service life and maintenance-free roller series.

 

 

2.Material

List	Material
Shell(Includes bearing house)	Conveyor Tube (Q235)
Shaft	20#
Bearing	SKF NSK FAG HRB LYC Or Equivalent Brand
Sealing ring	Nylon 6
Inner sealing ring	Nylon 1010
Outer sealing ring	Nylon 1010
Inner shield ring	08F
Outer shield ring	08F
Baffle	Q235-A
Check ring	Carbon Steel

 

 

 

 

 

3.Detail-production process

 

3.1 Structure:

In the production of roller, we consider the various factors to make its minimum starting torque, high efficiency, long life,minimum amount of maintenance and maximum carrying capacity to ensures the roller’s high-speed application with the ideal static balance and dynamic balance

 

3.2 Shell,Bearing,Bearing house

A) The indicators of the steel tube and shaft in accordance with the requirements of GB standard diameter,Straightness tolerance,appearance and other indicators were higher than GB higher requirements.

 

B) The steel pipe for shell is especially for roller production,the bearing housing is produced by stretched of the cold-rolled plate,its precision is ISOM7 which can make the starting torque is small.The shaft adopts cold drawing

processing up to ISOH6 to make sure the accuracy of bearing installation.

 

 

C) Between the bearing house and the shell,adopting CO2 gas shielded welding to make its double precision connection.

It will makes the overall structure of the roller body with high intensity and guarantee the good accuracy and minimize the radial unbalance factor.

 

Sheet 1
外径 Diameter mm	壁厚 Thickness mm	理论 重量 kg	允许偏差,Allowable Deviation mm				同截面 壁厚差 The Same Section Shell Thickness
			外径 Diametter mm		壁厚 Shell Thickness mm
			普通级 Normal	较高级 Superior	普通级 Normal	较高级 Superior
63.5	3.2	4.76	±0.50	±0.30	±0.32	±0.24	≤7.5%
	4.5	6.55			±0.45	±0.34
76.0	3.2	5.74	±0.50	±0.30	±0.32	±0.24
	4.5	7.93			±0.45	±0.34
89.0	3.2	6.77	±0.60	±0.40	±0.32	±0.24
	4.5	9.38			±0.45	±0.34
108.0	3.2	8.27	±0.70	±0.40	±0.32	±0.24
	4.5	11.49			±0.45	±0.34
133.0	4.5	14.26	±0.80	±0.60	±0.45	±0.34
	5.0	15.78			±0.50	±0.38
159.0	5.0	17.14	±0.90	±0.60	±0.45	±0.34
	6.0	18.99			±0.50	±0.38
194.0	5.0	23.30	±1.0	±0.80	±0.50	±0.38
	6.0	27.32			±0.60	±0.45
219.0	5.0	26.39	±1.1	±0.80	±0.50	±0.38
	6.0	31.52			±0.60	±0.45

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3.3 Bearing

The roller adopts C3 deep groove ball bearings,Choose two-way sealing structure in order to further improve the waterproof and dust proof.

Common type in the following table:

4G204

4G205

4G206

4G305

4G306

4G308

 

Brand: HRB LYC SKF NSK FAG , Etc.

 

3.4 Seal

Under specific temperature environment, even a small amount of water vapour into the roller also can make its rust, to prevent this kind of phenomenon, we have adopted a series of seal measures.

A)From the outside piece, A preservative zinc aluminum alloy cover which fixed on the shaft can prevent more than one mm particles into the roller.

B)Go inside,A very low friction in the rubber lip seal can prevent the grease from escaping from the roller
and external liquid into the roller,so when roller operation in the water after 24 hours,the weight still stays the same.

C)Innermost,The ternary type labyrinth seal can effectively prevent the external atmosphere medium into the bearing chamber,Improve the rollers of waterproof, dustproof performance.

 

 

3.5 Grease

Roller adopts long-lasting lithium grease lubrication,it will help grease under different climate environment has a good stability, the amount of oil in bearing housing is available for roller’s entire life cycle using.

 

Roler Technical Data

1. idler roller

1.1 idler roller steel pipes should not be less than the GB / T13792 provisions

1.2 idler roller assembly, bearings and seals (labyrinth seals) should be charged with the No. 2 lithium grease,whose performance of not less than specified in GB7324-1934 . Bearing oil-filled amount should be 3/2 to 3/4 of the bearing gap, the gap of the seal should be filled too.

1.3 idler rollers (except impact roller, comb-type and other special rollers) outer radial runout shall comply with the provisions of table 13.

1.4 After idler roller assembly, the roller axial displacement shall not exceed 0.7mm at 500N axial pressure.

1.5 After applying the axial load given in table 14, the roller shaft and roller shell, bearing house, seals should not be disengaged.

 

 

Belt speed (m/s)	Length of shell(mm)
	<550	≥550~950	＞950~1600	＞1600
≥3.15	0.5	0.7	1.3	1.7
＜3.15	0.6	0.9	1.5	1.9

 

 

Diameter of shaft(mm)	Applying axial force N
≤20	10 000
≥25	15 000

 

 

 

1.6 After idler roller assembly, the roller at 600r / min’s rotation at 250N radial pressure, its rotational resistance test, its numerical value should not be greater than the numerical values in Table 15, When rotating again after stop for 1h, the rotation resistance should not exceed 1.5 times than the numerical value in table 15.

 

Dia of shell (mm)		≤108	≥133
Revolving resistance (N)	Dust-proof roller	2.5	3.0
	Water-proof roller	3.6	4.35

 

 

1.7 After the horizontal and vertical drop test according to a predetermined height of 1.4 , the roller parts should meet the following conditions:

A) parts and welds should not produce damage and cracks ,it won’t allow loose to each other;

B) the axial displacement of the rollers should not exceed 1.5mm.

 

1.8 When rollers at 600r / min rotation, the dust-proof and waterproof performance should meet the following conditions:

A) dust-proof roller (refer to non-contact seals) in a container with a coal dust, continuous operation 200h, coal dust can not enter the bearing grease.

In watering working conditions, continuous operation 72h, the water inflow should not exceed 150g;

B) water-proof roller (refer to the contact seals) in the flooded working conditions, The water inflow should not be more than 5g after Continuous operation 24 h.

 

1.9 Idler rollers (except impact roller) In the case of speed is not more than 600 r/min, the designed life should not be less than 30 000h,and during the idler roller’s lifetime,the roller damage rate should not be greater than 10%.

 

Bearing Housing Testing :

 

 

 

Packing 

 

 

 

Conclusion

We has produced roller for more than 20 years.

We will keep improving better product to each customer.

 

We promise:

Take 100% responsibility for each customer and any product.

Good products are not necessarily expensive, we only provide cost-effective products !

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HEBEI QINYI CONVEYING EQUIPMENT CO.,LTD