Slewing Unit
AssemblyRotating connection on the mast top where the flat-top design joins jib and counter-jib directly, replacing the A-frame and tower peak. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.
Slewing Unit parts and their functions
4 top-level parts · 24 parts in total · full bill of materials below
| # | Part | Qty | What it does |
|---|---|---|---|
| 1 | Slew Bearing Ring 4 parts | 1× | Large bearing race |
| 2 | Slew Drive Unit 5 parts | 2× | Rotation drive unit |
| 3 | Turntable Platform | 1× | Rotating platform |
| 4 | Flat-Top Connection Frame 3 parts | 1× | A-frame replacement connection |
3D model
No 3D model yet. Have a CAD file of this? Add a 3D model. STL renders right on this page; STEP, FreeCAD, and OpenSCAD sources are welcome too (openly licensed, like all 3D models on BOMwiki).
Build & assembly graph
expand / collapse · shared sub-assemblies converge · links to related products · est. labour
product / assembly
shared across products
atomic part
related product
Tap an assembly to expand/collapse · tap a part to open it · use “Open page” for any node · drag to pan, scroll to zoom.
Bill of materials for Slewing Unit
4 top-level lines · 16 rows shown · 24 parts total · indented to 3 levels| # | Item / sub-assembly | Part no. | Qty/assy | Ext. qty | Parts | Type |
|---|---|---|---|---|---|---|
| 1 | Slew Bearing Ring 4 parts | flat-top-tower-crane-slew-ring | 1× | 1 | 5 | assembly |
| 1.1 | Bearing Race | flat-top-tower-crane-bearing-race | 1× | 1 | · | part |
| 1.2 | Ball Bearing | ball-bearing | 1× | 1 | · | part |
| 1.3 | Slew Gear Rim | flat-top-tower-crane-slew-gear-rim | 1× | 1 | · | part |
| 1.4 | Oil Seal | oil-seal | 2× | 2 | · | part |
| 2 | Slew Drive Unit 5 parts | flat-top-tower-crane-slew-drive | 2× | 2 | 6 | assembly |
| 2.1 | Slew Motor | flat-top-tower-crane-slew-motor | 1× | 2 | · | part |
| 2.2 | Gearbox Housing | gearbox-housing | 1× | 2 | · | part |
| 2.3 | Helical Gear Pair | gear-pair | 2× | 4 | · | part |
| 2.4 | Slew Pinion | flat-top-tower-crane-slew-pinion | 1× | 2 | · | part |
| 2.5 | Slew Brake | flat-top-tower-crane-slew-brake | 1× | 2 | · | part |
| 3 | Turntable Platform | flat-top-tower-crane-turntable | 1× | 1 | · | part |
| 4 | Flat-Top Connection Frame 3 parts | flat-top-tower-crane-flat-top-frame | 1× | 1 | 6 | assembly |
| 4.1 | Connection Box Girder | flat-top-tower-crane-connection-box | 1× | 1 | · | part |
| 4.2 | Jib Root Pin | flat-top-tower-crane-root-pin | 4× | 4 | · | part |
| 4.3 | Fastener Set | fastener-set | 1× | 1 | · | part |
Something wrong in this list? Report a problem with this BOM.
Where the slewing unit is used
1 product across 1 domain contain it, directly or inside a sub-assemblyUsed in 1 assembly
Sourcing: possible vendors
Browse the supplier directory → Prices, MOQ, and lead times are algorithmic estimates, not quotes, and not claims about these companies. Company mappings are curated by keyword; est. price band $0.50–$200. How estimates work| Vendor | HQ | Specialty | MOQ | Lead time |
|---|---|---|---|---|
| bharatforge.com ↗ | Pune, IN | Forgings & metal parts | 500 pcs | 6–10 wks |
| dicastal.com ↗ | Qinhuangdao, CN | Aluminium castings & wheels | 500 pcs | 6–10 wks |
| tataautocomp.com ↗ | Pune, IN | Auto components | 500 pcs | 6–10 wks |
|
🇸🇬Beyonics
beyonics.com ↗
|
Singapore | Precision metal & mfg | 500 pcs | 6–10 wks |
| sundaram-clayton.com ↗ | Chennai, IN | Die castings | 500 pcs | 6–10 wks |