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Xuzhou Wanda high quality more popular slew drive worm gear slewing drive WEA14 with hydraulic motor

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WEA14 used for the heavy machine, scraper
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The slewing drive is a gearbox that can safely hold radial and axial loads, as well as transmit a torque for rotating. The rotation can be in a single axis, or in multiple axes together. 

Slewing drives are made by manufacturing gearing, bearings, seals, housing, motor and other auxiliary components and assembling them into a finished gearbox.

Introduction:

By adopting slewing bearing as its core component, slewing drive can bear axial force, radial force and tilting moment simultaneously. Slewing drive is widely applied in modular trailers, all types of cranes, aerial working platform, solar tracking systems and wind power systems.

Electric and planetary gearboxes can be designed according to customer’s requirements. Slewing drive has the advantage for saving space in facilities, max load capacity in a compact design, extensive lifespan, and reduced maintenance costs.


Glossary

1) Tilting Moment Torque: Torque is the load multiplied by distance between the position of load and the center of slewing bearing. If the torque generated by load and distance is greater than the rated tilting moment torque, slewing drive will be overturned.

2) Radial load: Load vertical to the axis of slewing bearing

3) Axial load: Load parallel to the axis of slewing bearing

4) Holding torque: It is the reverse torque. When the drive is rotating reversely, and parts are not damaged,

5) The maximum torque achieved is called holding torque.

6) Self-locking: Only when loaded, the slewing drive is not able to reverse rotate and thus called self-locking.


--Customer can choose the motor according to our already designed slewing drive connect dimension.

--We can design the connect structure according to customer’s motor connect dimension.

--We can help to provide the whole parts with Hydraulic motor, DC motor, AC motor, Stepper or Servo motor.

WEA.jpg

WEA series slewing drive,slew drive is a new series of slewing product, also named as slewing reducer. It is commonly composed of worm, slewing bearing, housing, motor adapter, end cap and other components. By adopting slewing bearing as its core component, slewing drive can bear axial force, radial force and tilting moment simultaneously. Comparing with SE series slewing drive, WEA series have the advantages of better protective performance, great transmission torque, better impact resistance and long working life.

WEA series slewing drive is widely applied in the relatively rotary parts of machinery and solar energy field.  Solar tracking system Rotary chassis of aerial working machinery Truck crane Rock drill, drilling machine Grasping wood machine, code molding machine

To get drawing (pdf),please clik on Model.

Model

Pdf.format

External Dimensions

Installation Dimensions

Mounting Hole Data

L1

L2

L3

H2

D0

D2

D3

D4

D5

n1

M1

T1

T2

n2

M2

T3

mm

Inner Ring

Outer Ring

WEA9

424

330

180

108

360

175

146

222.5

270

15

M16

30

62

16

M16

30

WEA12

509

370

222.5

108

445

259

229

310

358

19

M16

30

62

18

M16

30

WEA14

544

380

240

108

480

295

265

342

390

23

M16

30

56

18

M16

30

WEA17

534

405

285

108

570

365.1

332

430

479.4

20

M16

32

62

20

M16

32

WEA21

762

483

350

130

693

466.7

425

540

574.2

35

M20

40

70

36

M20

40

WEA25

861

513

399

130

793

565

525

630

675

35

M20

40

70

36

M20

40


Model

Rated Ourput Torque

kN.m

Tilting Moment Torque

kN.m

Static Axial Load

kN

Static Radial Load

kN

Dynamic Axial Load

kN

Dynamic Radial Load

kN

Holding Torque

kN.m

Gear Radio

Output Speed

RPM

Self-locking Gears

Weight

kg

WEA9

8

33.9

550

205

130

110

38.7

62:1

3

Yes

53kg

WEA12

9.5

54.3

725

270

180

140

43

79:1

3

Yes

66.8kg

WEA14

10.8

67.8

920

343

220

190

48

86:1

3

Yes

75kg

WEA17

12.96

135.6

1110

414

268

220

72.3

104:1

2

Yes

96kg

WEA21

28.7

203

1595

596

340

270

105.8

90:1

1.5

Yes

172kg

WEA25

34.2

310

1850

690

440

320

158.3

104:1

1.5

Yes

202kg

Enclosed housing slewing drive, slew drive mainly apply to the relatively high condition for high requirement for dust-proof, rain-proof and aniti-corrosion occasion. Precision grade IP65.
Note

1.Different motors(AC,DC,Hydraulic) can be designed according to customer’s requirement.

2.Shaft opposite to motor can choose to be hex head or not hex head.

- See more at: http://en.site33184760.tw.ldyjz.com/SE3-pd6918425.html#sthash.1u0q1myb.dpuf

Enclosed housing slewing drive, slew drive mainly apply to the relatively high condition for high requirement for dust-proof, rain-proof and aniti-corrosion occasion. Precision grade IP65.
Note

1.Different motors(AC,DC,Hydraulic) can be designed according to customer’s requirement.

2.Shaft opposite to motor can choose to be hex head or not hex head.

History

The slewing drive is a modernized take on the worm drive mechanism that dates back many centuries and was widely used during the Renaissance Era. Pappus of Alexandria (3rd century AD),

a Greek mathematician is credited for an early version of the endless screw, which would later evolve into the worm drive.This mechanism was also used by Leonardo da Vinci as a component in many

of his designs for machines.It can also be found in the notebooks of Francesco di Giorgio of Siena.Many slewing drive concepts found prominence with the emergence of larger scale construction and

engineering in the height of the Greek and Roman Empires.

Technology

Traditional worm gear with a 4-start worm.

Slewing drives function with standard worm technology, in which the worm on the horizontal shaft acts as the driver for the gear. The rotation of the horizontal screw turns a gear about an axis perpendicular to the screw axis.

This combination reduces the speed of the driven member and also multiplies its torque; increasing it proportionally as the speed decreases.The speed ratio of shafts depends upon the relation of the number of 

threads on the worm to the number of teeth in the worm wheel or gear.

As technology has improved, more slewing drives are using hourglass worm technology, in which the worm is shaped to engage more teeth in the gear.This increased tooth engagement results in greater

strength, efficiency and durability.

Performance characteristics

Because of their multiple uses, slewing drives come in a variety of model sizes, performance ranges and mounting characteristics.

The drives are well suited for applications that require both load holding and rotational torque from the same gear box.

They can also be made with dual axes of rotation, (turning axes at the same time) or with dual drives on the same axis, (two worm threads driving the same ring gear in one axis).

Materials

The specifications for drives and gears varies depending on the material the gear is composed of. However, a majority of the drives and gears commonly used are composed of steel and phosphor bronze.

According to an extensive series of tests by the Hamilton Gear & Machine Co., chill-cast nickel-phosphor bronze ranked first in resistance to wear and deformation. Number two on the list was SAE No. 65 bronze.For bronze gears a good casting should have the following minimum physical characteristics:

Applications

There are many applications in which the slewing drive can be utilized, primarily because it is perfect for applications that require both load-holding power and rotational torque strength.

Typical slewing drive applications include but are not limited to:Solar trackers,wind turbines,Man lifts,Hydraulic Machinery, Telescopic Handlers, Digger Derricks, Lifts,  Cranes, Drilling equipment, Military Equipment


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Enclosed housing slewing drive, slew drive mainly apply to the relatively high condition for high requirement for dust-proof, rain-proof and aniti-corrosion occasion. Precision grade IP65.
Note

1.Different motors(AC,DC,Hydraulic) can be designed according to customer’s requirement.

2.Shaft opposite to motor can choose to be hex head or not hex head.

- See more at: http://en.site33184760.tw.ldyjz.com/SE3-pd6918425.html#sthash.1u0q1myb.dpuf


Enclosed housing slewing drive, slew drive mainly apply to the relatively high condition for high requirement for dust-proof, rain-proof and aniti-corrosion occasion. Precision grade IP65.
Note

1.Different motors(AC,DC,Hydraulic) can be designed according to customer’s requirement.

2.Shaft opposite to motor can choose to be hex head or not hex head.

- See more at: http://en.site33184760.tw.ldyjz.com/SE3-pd6918425.html#sthash.1u0q1myb.dpuf

Recent News

Xuzhou WanDa Slewing Bearing Co.,Ltd.
One More Choice For You!
Xuzhou WanDa Slewing Bearing Co.,Ltd.
 No.15,Huaxia Road,the 3rd Industrial Park,Tongshan District, Xuzhou, Jiangsu,China.
  +86-516-83309366     +86-516-83303986
   info@slew-bearing.com
  +86-133-37939399   +86-180 2053 7858

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