012.30.900 Technical Specifications
| Bearing Type | Single-row Four Point Angular Contact Ball Slewing Bearings |
|---|---|
| Gear Type | External gear type |
| d (ID) | 778mm |
| D (OD) | 1022mm |
| B (Width) | 100mm |
| Dynamic Load (Cr) | |
| Static Load (Cor) | 3550kN |
| Mass | 240Kg |
| Material | GCr15 bearing steel, raceway hardened and precision ground |
| Cage | Segmented brass or steel cage (optional per working condition) |
| Clearance | C3 standard clearance (C4 optional for high vibration) |
| Precision | P0 standard precision |
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 | 901 mm |
| d1 | 898 mm |
| H1 | 90 mm |
| h | 10 mm |
Gear
| b | 80 mm | Tooth width |
|---|---|---|
| m | 80 | Module |
| da | 1068 mm | Tooth tip diameter of external gear ring |
| z | 104 | Number of teeth of external gear |
Product Description
012.30.900 is a single-row crossed roller slewing bearing with external gear. It features 30mm diameter rollers and 900mm raceway center circle diameter. The crossed roller design provides higher rigidity and moment load capacity compared to ball bearings. This model is driven by a pinion meshing with the external teeth. It measures 778mm inner diameter, 1022mm outer diameter, and 100mm height. With stable rotation, high load capacity, and easy maintenance, it is widely used in cranes, rotary platforms, and heavy industrial equipment.
Key Features
Single-row crossed roller design, Higher rigidity than ball bearings, P0 precision standard, C3 internal clearance, Segmented brass or steel cage, External gear for pinion drive, Compact cross-section
Applications
Tower cranes, Mobile cranes, Excavators, Aerial work platforms, Port machinery
Related Products
Is 012.30.900 suitable for heavy attachments or manual rotary tables?
What customization options are available for 012.30.900?
Can 012.30.900 replace other brands' crossed roller bearings?
How can I get a quotation for 012.30.900?
What is the lead time for 012.30.900?
Are you a trading company or a factory?
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
Image for reference only.
