111.28.900 Bearing Technical Specifications
-
- Bore Diameter(d) 778mm
- Outer Diameter (D) 1022mm
- Width(B) 82mm
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- Dynamic Load Rating (Cr)
- Static Load Rating (Cor) 2090kN
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- Weight 190kg
Single Row Crossed Roller Slewing Bearing 111.28.900 is part of the 111 Series (External gear type). Engineered for heavy industrial applications, it features a compact single row design with crossed cylindrical rollers arranged at 90° angles designed to handle simultaneous radial, axial, and moment loads with high precision and rigidity. The external gear teeth on the outer ring enables reliable heavy-load drive integration for large-scale motion control systems.
With specification code 28.900, this heavy-duty bearing has dimensions of 778mm bore diameter, 1022mm outer diameter, and 82mm width. As a compact heavy-duty slewing bearing, it is manufactured from premium grade GCr15 bearing steel with precision-ground raceways, ensuring exceptional durability and long service life in harsh industrial environments.
Key Features: Compact drive arrangement, Protected gear teeth, High torque transmission, Low backlash.
Typical Applications: tower crane slewing rings, offshore crane turntables, mobile harbor crane systems.
Bearing Type
Main Dimensions
778mm × 1022mm × 82mm
Bearing Model
Bolt Hole Diameter
| D1 | 978 mm |
|---|---|
| D2 | 822 mm |
| dn1 dn2 | 22 |
| dm1 dm2 | M20 |
| L | 40 mm |
| n | 30 mm |
Structure dimensions
| n1 | 6 mm |
|---|---|
| D1 | 898 mm |
| d1 | 902 mm |
| H1 | 72 mm |
| h | 10 mm |
Gear
| b | 65 mm | Tooth width |
|---|---|---|
| m | 65 | Module |
| da | 739.2 mm | Tooth tip diameter of external gear ring |
| z | 93 | Number of teeth of external gear |
Material
GCr15 Premium Bearing Steel (hardened and precision ground raceways for crane applications) (Customizable materials: GCr15 Bearing Steel/GCr15SiMn/GCr18Mo/G20Cr2Ni4A)
Precision Rating
P6 (Industrial precision for internal gear crane bearings) (Customizable on demand in P0/P6/P5/P4 grades; higher precision for demanding applications)
Clearance
Heavy-duty industrial clearance (C3 equivalent) for crane and lifting equipment (customizable on demand in C0/C2/C3/C4/C5 specifications)
Brand
WJY / OEM Available
Origin
Quality Standard
Delivery Time
- For in-stock own-brand bearings, Dalian JinYu HuaYang guarantees shipment arrangement within 3–5 days after payment confirmation.
- For OEM/ODM orders, the production and delivery lead time for a full container typically ranges from 20–35 days (depending on order complexity).
Shipping Methods
Ocean Freight/Land Transport
Warranty
We provide 12-month warranty, extendable to 18 months via authorized JinYu distributors.
Pricing Information
Bearings prices vary by precision grade, raw material quality, and market dynamics. For customized quotes, please submit an inquiry via our contact form.