VSI250755-N-ZT-RL0 Four Point Contact Slewing Ring, Standard Series 25, Internal Gear Teeth

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VSI250755-N-ZT-RL0

Bore Diameter:610 mm

Outside Diameter:853 mm

Width:80 mm

Weight:119 kg

Min. Order:1 Piece

The VSI250755-N-ZT-RL0 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 VSI250755-N-ZT-RL0 bearing is a Four point contact bearing, slewing ring standard series 25, internal gear teeth with an inner diameter of 610 mm , an outer diameter of 853 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 305000 N, its static radial rated load is approximately 1230000 N. Its dynamic axial rated load is approximately 340000 N, its static axial rated load is approximately 2700000 N. sealed on both sides type, NBR (Nitrile Butadiene Rubber). together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.

Dimensions:

Inside Diameter:

610 mm

Outside Diameter:

853 mm

Thickness:

80 mm

Weight:

119 KG

Performance Data:

Dynamic load Capacity, Radial (Cr):

305000 N

Static load Capacity, Radial (Cor):

1230000 N

Dynamic load Capacity, axial:

340000 N

Static load Capacity, axial:

2700000 N

Specifications:

Structure:

Four point contact ball slewing bearings (Internal 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:

VSI25

Rolling Element:

Balls

Gear Options:

internal

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

VSI250755-N-ZT-RL0 bearings ( 610 mm x 853 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	VSI250755-N-ZT-RL0
Bearing Type	Four point contact bearing, slewing ring standard series 25, internal gear teeth
Series	VSI25
Interchangeable	INA VSI250755-N-ZT-RL0
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]	119
Performance Data
C_a Dynamic Axial	340000 N \| 340.000 KN
C_0a Static Axial	2700000 N \| 2700.000 KN
C_r Radial Dynamic	305000 N \| 305.000 KN
C_0r Radial Static	1230000 N \| 1230.000 KN
Operating temperature - T(min) [°C]	-25
Operating temperature - T(max) [°C]	80
Dimensions
d₁ φ Inside Diameter [mm]	610
D_a Φ Outside Diameter [mm]	855
D_aZT Centring outer ring [mm]	853
D_aZT Tolerance [mm]	-IT8
d_{i φ Bore Diameter [mm]}	610
D_i Inner diameter outer ring [mm]	753
d_a Outside diameter inner ring [mm]	757
d_aZT Diameter centring inner ring [mm]	755
d_aZT Tolerance [mm]	-IT8
Height - H [mm]	80
T Length centering inner ring [mm]	19
h_a Width outer ring [mm]	54
h_i Height of inner ring [mm]	71
Fixing holes
L_a Pitchcircle diameter fixing holes outer ring [mm]	815
n_a Number of fixing holes in outer ring	24
L_i Pitchcircle diameter fixing holes inner ring [mm]	694
n_i Number of fixing holes in inner ring	24
d_B Fixing bore [mm]	22
Fr _{zul Max} Radial load fixing screws	380000 N \| 380.000 KN
d_Bi 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	internal
Gear rings material	C45N or 42CrMo4V65 (suffix N)
d₀ Pitch circle diameter gearing [mm]	630
m Module of gearing [mm]	10
z Number of teeth	63
F_{z norm} Tooth force	68000 N \| 68.000 KN
F_{z max} Tooth force	98900 N \| 98.900 KN
Designation Breakdown
Centering	ZT = Centering on inner and outer ring
Radial internal clearance	RL0 = Radial clearance 0 to 0.05; axial tilting clearance 0 to 0.08

The VSI250755-N-ZT-RL0 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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VSI250755-N-ZT-RL0 Four Point Contact Slewing Ring, Standard Series 25, Internal Gear Teeth

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