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011.25.355 Slewing Bearing

011.25.355 External Gear Four-Point-Contact Ball Slewing Bearing | 262x448x70mm — Small cranes, welding positioners

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011.25.355 Technical Specifications

Bearing Type Single-row Four Point Contact Ball Slewing Bearings
Gear Type External gear type
d (ID) 262mm
D (OD) 448mm
B (Width) 70mm
Dynamic Load (Cr)
Static Load (Cor) 810kN
Mass 49Kg
Material GCr15 steel balls, 50Mn/42CrMo rings, raceway hardened and precision ground
Cage Segmented brass or steel spacer blocks (optional per working condition)
Clearance Standard axial-radial play, custom play available on request
Precision P0 standard precision

Bolt Hole Diameter

D1 412 mm
D2 298 mm
dn1 dn2 18
dm1 dm2 M16
L 32 mm
n 20 mm

Structure dimensions

n1 2 mm
D1 356 mm
d1 354 mm
H1 60 mm
h 10 mm

Gear

b 50 mm Tooth width
m 50 Module
da 475 mm Tooth tip diameter of external gear ring
z 93 Number of teeth of external gear

Product Description

011.25.355 is a single-row four-point-contact ball slewing bearing with an external gear. It features a 355mm raceway center circle diameter. Its gothic-arch four-point-contact raceway enables the bearing to accommodate bidirectional axial loads, radial loads and tilting moments within a single bearing structure. This model is driven by a pinion meshing with the external teeth. The bearing measures 262mm in bore diameter, 448mm in outside diameter and 70mm in overall height. With stable rotation, comprehensive load capacity and easy maintenance, it is widely used in cranes, rotary platforms and heavy industrial equipment.

Key Features

Single-row four-point-contact ball design, Handles bidirectional axial, radial and tilting-moment loads, P0 precision standard, Segmented brass or steel spacer blocks, External gear for pinion drive, Compact cross-section

Applications

Tower cranes, Mobile cranes, Excavators, Aerial work platforms, Port machinery

What is four-point contact in 011.25.355 slewing bearing?

Four-point contact means that each steel ball can contact the inner and outer raceways at four points through the gothic-arch raceway geometry. This design allows a single bearing to accommodate bidirectional axial loads, radial loads and tilting moments.

Can 011.25.355 be customized or supplied as an OEM replacement?

Yes. We can manufacture 011.25.355 according to OEM drawings or technical requirements, including gear configuration, mounting hole pattern, sealing arrangement, material, heat treatment and other specifications. OEM replacement orders are also supported.

What is the minimum order quantity for 011.25.355?

The minimum order quantity is 1 piece. Mixed-model orders may be available depending on the total order quantity and shipment arrangement.

What is the lead time for 011.25.355?

The typical lead time is 10–20 days, depending on order quantity and production schedule.

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.

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