A8-25N2 Bore 542.29 Mm, Heavy Duty Slewing Rings With Internal Gears (four-point Contact Ball)

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A8-25N2

Bore Diameter:542.29 mm

Outside Diameter:730.25 mm

Width:88.9 mm

Weight:103.421 kg

Min. Order:1 Piece

The A8-25N2 Single-row four-point contact ball slewing bearings are widely used in rotational applications requiring the ability to withstand combined loads (axial force, radial force, and overturning moment) and demanding a compact structure and low self-weight, such as engineering machinery (truck cranes, excavators), wind power generation (yaw bearings), port machinery, photovoltaic tracking systems, robotics, and medical devices.

The A8-25N2 bearing is a Heavy Duty Slewing Rings with Internal Gears (four-point contact ball) with an inner diameter of 542.29 mm , an outer diameter of 730.25 mm, a width of 88.9 mm. 50Mn or 42CrMo rings, chrome-alloy steel rolling mlement. Seal on one side only type, together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.

Dimensions:

Inside Diameter:

542.29 mm

Outside Diameter:

730.25 mm

Thickness:

88.9 mm

Weight:

103.421 KG

Specifications:

Structure:

Four point contact ball slewing bearings (Internal gear type)

Number of Rows:

One

Bearing Material:

50Mn or 42CrMo

Seals Type:

Seal on one side only

Rolling Mlement Material:

chrome-alloy steel

Operating Temperature:

-25 to 60 °C

System of Measurement:

inch

Series:

3000 series

Rolling Element:

balls by spacers

Transaction Information:

Transport Package:

Standard Export Package

Service:

7*24 hour

Shipping Ways:

by Sea or Air

Country of Origin:

china

Stock:

200 Piece

Port:

Tianjin, Shanghai, Shenzhen, Guangzhou or Qingdao

Payment term:

by T/T in advance

Delivery time:

2-3 days for stock, 25-30 days for bulk production

Detailed description

A8-25N2 bearings ( 542.29 mm x 730.25 mm x 88.9 mm) have the advantages of Compact structure, lightweight, small footprint, high cost-performance ratio, and are therefore widely used in the Robots, construction machinery, wind turbines, radar antennas, and various rotary worktables.

Part Number	A8-25N2
Bearing Type	Heavy Duty Slewing Rings with Internal Gears (four-point contact ball)
Gears type	Internal Gear
Units	inch
Seal	Seal on one side only
Seal Material	NBR (Nitrile Butadiene Rubber)
Rows NO.	One
Outside - OD Φ [inch]	28.75
Inside - ID φ [inch]	21.350
IO [inch]	25.02
OI [inch]	24.99
IE [inch]	22.38
Overall Hight - HT [inch]	3.50
OH [inch]	2.88
IH [inch]	3.38
Mounting Holes - OBC [inch]	27.375
OU [inch]	5/8-11
No. Holes - OBC	18
Mounting Holes - IBC [inch]	23.625
IU [inch]	5/8-11
No. Holes - IBC	18
PD [inch]	21.750
DP [inch]	4
No. Of Teeth	87
F [inch]	2.00
Tooth Form	20d, Stub
Tangential Gear Capacity [lbs]	10600
Nominal Capacity Compressive Thrust [lbs]	350000
Nominal Capacity Raceway Moment [ft-lbs]	167000
Weight [lbs]	228

The A8-25N2 Single-row four-point contact ball slewing bearings mainly consist of an inner ring, an outer ring, steel balls, spacers, and a sealing device. The raceways are peach-shaped or arc-shaped, and the steel balls form four-point contact with the inner and outer ring raceways. Gears can be integrated into the inner and outer rings.

Single-row four-point contact ball slewing bearings feature a low axial height and light weight due to their single-row structure. One bearing can simultaneously withstand axial loads, radial loads, and overturning moments. The four-point contact design provides high load-bearing capacity, good rigidity, and easy installation and maintenance.

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A8-25N2 Bore 542.29 Mm, Heavy Duty Slewing Rings With Internal Gears (four-point Contact Ball)

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