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011.40.1120 Slewing Bearing

011.40.1120 External Gear Four-Point-Contact Ball Slewing Bearing | 998x1242x100mm

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011.40.1120 Technical Specifications

Bearing Type Single-row Four Point Contact Ball Slewing Bearings
Gear Type External gear type
d (ID) 998mm
D (OD) 1242mm
B (Width) 100mm
Dynamic Load (Cr)
Static Load (Cor) 4430kN
Mass 300Kg
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 1198 mm
D2 1042 mm
dn1 dn2 22
dm1 dm2 M20
L 40 mm
n 36 mm

Structure dimensions

n1 6 mm
D1 1121 mm
d1 1118 mm
H1 90 mm
h 10 mm

Gear

b 80 mm Tooth width
m 80 Module
da 1298 mm Tooth tip diameter of external gear ring
z 127 Number of teeth of external gear

Product Description

011.40.1120 is a single-row four-point-contact ball slewing bearing with an external gear. It features a 1120mm 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 998mm in bore diameter, 1242mm in outside diameter and 100mm 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 011.40.1120 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 011.40.1120 be customized or supplied as an OEM replacement?

Yes. We can manufacture 011.40.1120 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 011.40.1120?

The minimum order quantity is 1 piece. Larger quantities are available for project and replacement requirements.

What is the lead time for 011.40.1120?

The typical lead time is 20–30 days, depending on production requirements and order quantity.

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

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