VSA251055N Four Point Contact Slewing Ring, Standard Series 25, External Gear Teeth

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VSA251055N

Bore Diameter:955 mm

Outside Diameter:1198 mm

Width:80 mm

Weight:175 kg

Min. Order:1 Piece

The VSA251055N 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 VSA251055N bearing is a Four point contact bearing, slewing ring standard series 25, external gear teeth with an inner diameter of 955 mm , an outer diameter of 1198 mm, a width of 80 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 350000 N, its static radial rated load is approximately 1720000 N. Its dynamic axial rated load is approximately 385000 N, its static axial rated load is approximately 3750000 N. sealed on both sides type, NBR (Nitrile Butadiene Rubber). together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.

Interchange code: VSA251055-N

Dimensions:

Inside Diameter:

955 mm

Outside Diameter:

1198 mm

Thickness:

80 mm

Weight:

175 KG

Performance Data:

Dynamic load Capacity, Radial (Cr):

350000 N

Static load Capacity, Radial (Cor):

1720000 N

Dynamic load Capacity, axial:

385000 N

Static load Capacity, axial:

3750000 N

Specifications:

Old Designations:

VSA251055-N

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 on both sides

Seal Material:

NBR (Nitrile Butadiene Rubber)

Rolling Mlement Material:

GCr15

Operating Temperature:

-25 to 80 °C

System of Measurement:

Metric

Series:

VSA25

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

VSA251055N bearings ( 955 mm x 1198 mm x 80 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	VSA251055N
Bearing Type	Four point contact bearing, slewing ring standard series 25, external gear teeth
Series	VSA25
Equivalent	VSA251055-N
Interchangeable	INA VSA251055N
Load direction	axial, radial and tilting moment loads
Lubrication nipples	4 taper type lubrication nipples, DIN 71412-A S8x1,arranged evenly about the circumference
Seal type	sealed on both sides
Seal Material	NBR (Nitrile Butadiene Rubber)
Rows NO.	One
m Weight [kg]	175
Performance Data
C_a Dynamic Axial	385000 N \| 385.000 KN
C_0a Static Axial	3750000 N \| 3750.000 KN
C_r Radial Dynamic	350000 N \| 350.000 KN
C_0r Radial Static	1720000 N \| 1720.000 KN
Operating temperature - T(min) [°C]	-25
Operating temperature - T(max) [°C]	80
Dimensions
D_a Φ Outside Diameter [mm]	1198
d_{i φ Bore Diameter [mm]}	955
D_i Inner diameter outer ring [mm]	1053
D_iZT Diameter centring outer ring [mm]	1055
D_iZT Tolerance [mm]	+IT8
d_a Outside diameter inner ring [mm]	1057
Height - H [mm]	80
h_a Width outer ring [mm]	71
h_i Height of inner ring [mm]	54
Fixing holes
L_a Pitchcircle diameter fixing holes outer ring [mm]	1116
n_a Number of fixing holes in outer ring	30
L_i Pitchcircle diameter fixing holes inner ring [mm]	995
n_i Number of fixing holes in inner ring	30
d_B Fixing bore [mm]	22
Fr _{zul Max} Radial load fixing screws	363000 N \| 363.000 KN
d_Ba Tread fixing bore	M20
G_l Thread depth fixing hole [mm]	40
Gearing
Gearing type	N = Normalized gear teeth on bearing ring
Gear teeth type	external
Gear rings material	C45N or 42CrMo4V65 (suffix N)
d₀ Pitch circle diameter gearing [mm]	1180
m Module of gearing [mm]	10
z Number of teeth	118
F_{z norm} Tooth force	61200 N \| 61.200 KN
F_{z max} Tooth force	89000 N \| 89.000 KN
Designation Breakdown

The VSA251055N 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 VSA251055N ( 175 kg Mass, ID: 955 mm OD: 1198 mm WD: 80 mm , VSA25 Series , One Rows , P5, P6, P0 Accuracy Class , 50Mn,42CrMo Material , 350000 Radial dynamic , 1720000 Radial static ), Just click the button " Contact Now " to mention your purchase Requirement , Quantity and Contact Method of your requested Bearing Item No. VSA251055N. 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.

VSA251055N Four Point Contact Slewing Ring, Standard Series 25, External Gear Teeth

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