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Installation

2016/11/5      view:
 

1. Before installation

•Be sure that

--The slewing bearing you received is the one you have ordered

--The slewing bearing has not been damaged, especially radial shock loads resulting in changes of its characteristics.

--Seals are not damaged

--The type of the product is suitable for your machine

•Check and be sure that

--The slewing bearing rotational speed will not exceed the calculated value

--The slewing bearing can rotate smoothly

--With protection device in the gear meshing area, it do not exist any danger to material or people

2. Companion structures

•Check the contact area of the support structure and the platform. Clear for chips, weld¬ing particles, corrosion signs etc.

•The companion structures should have enough rigidity so as to avoid deformation result-ing in influences of its property.

•Tube-shaped welding structures are recommended, which should be tempered after all welding, and then machined.

•For large diameter slewing bearings (Φ3meters or larger), plastic cements are allowed when machining is not available.


--When the frame is tube-shaped, its vertical support in the companion structures must be in the vicinity of the track diameter

--To avoid any deformation, the mounting holes in the frame should be suitable for the holes in the slewing bearing.

                                                                   

  


 

The maximum admissible plan deviation are to be taken from the following table:

Raceway Diameter DL (mm)

deviation within 100mm width   P(mm)

single-row balls type

double-row balls type

rollers type

-1000

0.15

0.2

0.1

1000-1500

0.19

0.25

0.12

1500-2000

0.22

0.3

0.15

2000-2500

0.25

0.35

0.17

2500-4000

0.3

0.4

0.2

4000-6000

0.4

0.5

0.3

6000-8000

0.5

0.6

0.4

•To avoid peek loading, the deviation in the contact area should rise or fall just once in the range from 0" to 90" to 180".

•Under maximum load, the deflections of the companion structure should not exceed the values in the following table:

raceway

diameter DL(rnrn)

>1000

1500

> 1500

2000

> 2000

2500

> 2500

3000

> 3000

3500

> 3500

4000

> 4000

4500

> 4500

5000

> 5000

5500

> 5500

6000

> 6000

7000

> 7000

8000

maximun defection

Amax(mm)

0.6

0.8

1

1.3

1.6

2

2.5

3

3.6

4.2

4.8

5.8

7