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133.40.2500 Slewing Bearing

133.40.2500 Internal Gear Three-Row Roller Slewing Bearing | 2279x2721x231mm

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133.40.2500 Technical Specifications

Bearing Type Three-Row Roller Slewing Bearings
Gear Type Internal gear type
d (ID) 2279mm
D (OD) 2721mm
B (Width) 231mm
Dynamic Load (Cr) 25800kN
Static Load (Cor) 3020kN
Mass 3000Kg
Material 50Mn integral forging, raceway quenched; GCr15 steel rollers (three independent raceways)
Cage Segmented brass or steel cage (three independent raceways)
Clearance C3 standard clearance (C4 optional for high vibration)
Precision P0 standard precision (higher grades available)

Bolt Hole Diameter

D1 2655 mm
D2 2345 mm
dn1 dn2 33
dm1 dm2 M30
L 60 mm
n 72 mm

Structure dimensions

n1 mm
D1 mm
d1 mm
H1 219 mm
h 54 mm

Gear

b 160 mm Tooth width
m 160 Module
da 2185.2 mm Tooth tip diameter of internal gear ring
z 122 Number of teeth of internal gear

Product Description

133.40.2500 is a three-row roller slewing bearing with internal gear. It features three independent raceways: one for axial loads (upper), one for reverse axial loads (lower), and one for radial loads. Roller diameter is 40mm with 2500mm raceway center circle diameter. This design provides the highest load capacity among all slewing bearing types. This model is driven by a pinion inside the bearing ring. It measures 2279mm inner diameter, 2721mm outer diameter, and 231mm height. With exceptional rigidity and load capacity, it is widely used in extra-heavy applications such as large cranes, ship loaders, and tunnel boring machines.

Key Features

Three-row roller design, Independent axial and radial raceways, Highest load capacity among slewing bearings, Maximum rigidity and stability, P0 precision standard (P5/P6 available), C3 internal clearance, Segmented brass or steel cage, Internal gear for compact drive arrangement

Applications

Offshore platform cranes, Tunnel boring machines (TBM), Wind turbines (yaw & pitch), Dredgers, Rotary drills

What makes three-row roller bearing stronger than crossed roller or ball bearings?

Unlike ball or crossed roller designs with one raceway for combined loads, 133.40.2500 has three independent raceways: one for axial loads (upper), one for reverse axial loads (lower), and one for radial loads. Each raceway is optimized for its specific load direction, providing the highest load capacity and rigidity among all slewing bearing types.

Is 133.40.2500 suitable for my large crane or offshore application?

Yes. Three-row roller slewing bearings are specifically designed for extreme heavy-duty applications. 133.40.2500 is commonly used in large tower cranes, ship unloaders, offshore platform cranes, tunnel boring machines (TBM), and heavy-duty excavators where maximum load capacity is required.

What customization options are available for 133.40.2500?

We provide OEM customization including gear type (external/internal/gearless), mounting hole pattern (quantity, size, arrangement), sealing arrangement (standard/heavy-duty/high-temperature), roller material and heat treatment, and surface protection (zinc plating, painting, phosphate coating).

How can I get a quotation for 133.40.2500?

Please provide model number, quantity, gear type (external/internal/gearless), mounting hole requirements, and application details (load conditions, environment). We will respond with a factory-direct quotation within 24 hours.

What is the lead time for 133.40.2500 three-row bearings?

Standard sizes (common PCD under 2000mm): 15-25 days. Larger sizes (2000-4000mm): 30-40 days. Custom orders (special gear, mounting holes, non-standard dimensions): 45-60 days depending on complexity. Rush orders may be available for an additional fee.

Are you a trading company or a factory?

We are a professional bearing manufacturer located in Wafangdian, China (the bearing capital of China). We produce three-row roller slewing bearings with stable quality, factory direct pricing, and full technical support.

Delivery & Service

Delivery Time

In-stock items: 3–5 working days; Bulk orders: 7–15 working days.

Shipping

Ocean Freight / Land Transport

Warranty

12-month warranty, extendable to 18 months.

Loading Port

Dalian Port or other nominated port

Packing

Export packing: tube + box + carton + wooden case

Order

Mixed models & small orders welcome

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