Bearing Manufacturer | OEM & Global Supply

130.50.3550 Slewing Bearing

130.50.3550 Gearless Three-Row Roller Slewing Bearing | 3268x3832x270mm

WhatsApp

130.50.3550 Technical Specifications

Bearing Type Three-Row Roller Slewing Bearings
Gear Type No gear type
d (ID) 3268mm
D (OD) 3832mm
B (Width) 270mm
Dynamic Load (Cr) 4040kN
Static Load (Cor) 4310kN
Mass 5600Kg
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 3742 mm
D2 3358 mm
dn1 dn2 45
dm1 dm2 M42
L 84 mm
n 72 mm

Structure dimensions

n1 8 mm
H1 258 mm
h 65 mm

Product Description

130.50.3550 is a three-row roller slewing bearing without gear (gearless). It features three independent raceways: one for axial loads (upper), one for reverse axial loads (lower), and one for radial loads. Roller diameter is 500mm with 3550mm raceway center circle diameter. This design provides the highest load capacity among all slewing bearing types. This model is driven by external chain or friction wheel. It measures 3268mm inner diameter, 3832mm outer diameter, and 270mm 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, Gearless design for external drive

Applications

Extra-heavy rotary tables, Large diameter turntables, Industrial positioners, Test equipment, Heavy maintenance platforms

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

Unlike single raceway ball or crossed roller slewing bearings that share one raceway to carry combined loads, the 130.50.3550 three-row roller slewing bearing has three independent raceways: upper row for axial load, lower row for reverse axial load, middle row for radial load. Each raceway takes charge of one load direction separately. It delivers the highest static load capacity and structural rigidity among all slewing bearing series.

Is 130.50.3550 suitable for large crane or offshore working conditions?

Yes. Three-row cylindrical roller slewing bearings are engineered for ultra-heavy duty operating scenarios. 130.50.3550 is widely adopted on large tower cranes, ship unloaders, offshore platform cranes, tunnel boring machines (TBM), and heavy mining excavators where ultimate load bearing performance is essential.

What custom services can you supply for 130.50.3550?

We offer full OEM customization: gear type (external gear / internal gear / gearless), mounting hole layout (hole quantity, diameter, circle distribution), sealing systems (standard, heavy dust-proof, high-temperature resistant), roller material & heat treatment, anti-corrosion surface treatment (phosphate coating, painting, zinc plating).

How to request quotation for 130.50.3550 three row roller slewing bearing?

Kindly send us model number, order quantity, gear configuration, mounting hole specifications and working parameters (load data, operating environment). Our sales team will send factory direct quotation within 24 hours.

What is production lead time of 130.50.3550?

Standard common sizes (raceway diameter below 2000 mm): 15–25 working days. Large size models (2000–4000 mm raceway diameter): 30–40 working days. Fully custom bearings (special gear, non-standard bolt holes, special dimensions): 45–60 working days, subject to drawing complexity. Expedited production can be arranged with extra cost.

Are you manufacturer or trading company?

We are a professional slewing bearing manufacturer based in Wafangdian, China, famous bearing base. We produce three-row roller slewing bearings in-house with consistent quality, competitive factory price and complete engineering technical support.

Service

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

Image for reference only.

Get Instant Quote

Request pricing and availability for 130.50.3550 Slewing Bearing

We usually reply within 24 hours.

Chat on WhatsApp