VA 25 0309 N Four Point Contact Slewing Ring, External Teeth

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VA 25 0309 N

Bore Diameter:235 mm

Outside Diameter:408.4 mm

Width:60 mm

Weight:29.5 kg

Min. Order:1 Piece

The VA 25 0309 N 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 VA 25 0309 N bearing is a Four point contact bearing, slewing ring, external teeth with an inner diameter of 235 mm , an outer diameter of 408.4 mm, a width of 60 mm. It typically uses P5, P6, P0 grade precision tolerances and 50Mn,42CrMo rings, GCr15 rolling mlement. It primarily bears axial, radial and tilting moment loads, Its dynamic radial rated load is approximately 232000 N, its static radial rated load is approximately 295000 N. Its dynamic axial rated load is approximately 255000 N, its static axial rated load is approximately 640000 N. sealed type, NBR (Nitrile Butadiene Rubber). together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.

Interchange code: VA250309-N

Dimensions:

Inside Diameter:

235 mm

Outside Diameter:

408.4 mm

Thickness:

60 mm

Weight:

29.5 KG

Performance Data:

Dynamic load Capacity, Radial (Cr):

232000 N

Static load Capacity, Radial (Cor):

295000 N

Dynamic load Capacity, axial:

255000 N

Static load Capacity, axial:

640000 N

Specifications:

Structure:

Four point contact ball slewing bearings (External gear type)

Number of Rows:

One

Precision Rating:

P5, P6, P0

Load Direction:

axial, radial and tilting moment loads

Bearing Material:

50Mn,42CrMo

Seals Type:

sealed

Seal Material:

NBR (Nitrile Butadiene Rubber)

Rolling Mlement Material:

GCr15

Operating Temperature:

-25 to 80 °C

System of Measurement:

Metric

Series:

Rolling Element:

Balls

Gear Options:

external

Transaction Information:

Transport Package:

Standard Export Package

Service:

7*24 hour

Shipping Ways:

by Sea or Air

Country of Origin:

china

Stock:

10 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

VA 25 0309 N bearings ( 235 mm x 408.4 mm x 60 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	VA 25 0309 N
Bearing Type	Four point contact bearing, slewing ring, external teeth
Series	VA
Equivalent	VA250309-N
Interchangeable	INA VA 25 0309 N
Load direction	axial, radial and tilting moment loads
Lubrication nipples	4 taper type lubrication nipples, DIN 71412, arranged evenly about the circumference
Seal type	sealed
Seal Material	NBR (Nitrile Butadiene Rubber)
Rows NO.	One
m Weight [kg]	29.5
Performance Data
C_a Dynamic Axial	255000 N \| 255.000 KN
C_0a Static Axial	640000 N \| 640.000 KN
C_r Radial Dynamic	232000 N \| 232.000 KN
C_0r Radial Static	295000 N \| 295.000 KN
Operating temperature - T(min) [°C]	-25
Operating temperature - T(max) [°C]	80
Dimensions
D_a Φ Outside Diameter [mm]	408.4
d_{i φ Bore Diameter [mm]}	235
D_i Inner diameter outer ring [mm]	308
D_iZT Diameter centring outer ring [mm]	310
D_iZT Tolerance [mm]	+IT8
d_a Outside diameter inner ring [mm]	310
Height - H [mm]	60
h Height of individual ring [mm]	52.5
T Length centering inner ring [mm]	3
t Length centering inner ring [mm]	8
h_a Width outer ring [mm]	52.5
h_i Height of inner ring [mm]	52.5
Fixing holes
L_a Pitchcircle diameter fixing holes outer ring [mm]	359
n_a Number of fixing holes in outer ring	24
L_i Pitchcircle diameter fixing holes inner ring [mm]	259
n_i Number of fixing holes in inner ring	24
d_B Fixing bore [mm]	13
Fr _{zul Max} Radial load fixing screws	99100 N \| 99.100 KN
Gearing
Gearing type	N = Normalized gear teeth on bearing ring
Gear teeth type	external
Gear rings material	C45N or 42CrMo4V65 (suffix N)
b Width gearing [mm]	52.5
d₀ Pitch circle diameter gearing [mm]	400
m Module of gearing [mm]	5
z Number of teeth	80
F_{z norm} Tooth force	12900 N \| 12.900 KN
F_{z max} Tooth force	18800 N \| 18.800 KN
Designation Breakdown

The VA 25 0309 N 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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High quality VA 25 0309 N ( 29.5 kg Mass, ID: 235 mm OD: 408.4 mm WD: 60 mm , VA Series , One Rows , P5, P6, P0 Accuracy Class , 50Mn,42CrMo Material , 232000 Radial dynamic , 295000 Radial static ), Just click the button " Contact Now " to mention your purchase Requirement , Quantity and Contact Method of your requested Bearing Item No. VA 25 0309 N. then click the button " Send " The web site will make your purchasing information sent to the supplier's mailbox, who will come to contact you upon they get your information at the first time.

VA 25 0309 N Four Point Contact Slewing Ring, External Teeth

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