Slewing Unit

Assembly

Aluminium melting crucible casting process.jpg · Commons ↗ Report photo

Single-row ball slewing bearing connecting arm to mast, free-slewing or driven by a geared motor on larger cranes.

Direct parts	5
Total parts	31
Used in	1 assembly
Class	Assembly

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Single-row ball slewing bearing connecting arm to mast, free-slewing or driven by a geared motor on larger cranes. 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

5 top-level parts · 31 parts in total · full bill of materials below

Slewing Unit parts diagram: 1 slewing ring bearing, 2 slew drive unit, 3 slew friction brake, 4 rotation limit stop, 5 fastener set. 31 parts in 5 top-level items. — Slewing Unit parts diagram. Numbers match the table below; each box is one top-level part or assembly with what it contains.

#	Part	Qty	What it does
1	Slewing Ring Bearing	1×	Four-point-contact ring bearing
2	Slew Drive Unit 4 parts	1×	Geared slew motor (powered models)
3	Slew Friction Brake	1×	Friction slew brake
4	Rotation Limit Stop	1×	Adjustable slew limit
5	Fastener Set	1×	Grade 10.9 ring bolts

3D model

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Build & assembly graph

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Bill of materials for Slewing Unit

5 top-level lines · 13 rows shown · 31 parts total · indented to 3 levels

#	Item / sub-assembly	Part no.	Qty/assy	Ext. qty	Parts	Type
1	Slewing Ring Bearing	jib-crane-slewing-bearing	1×	1	·	part
2	Slew Drive Unit 4 parts	jib-crane-slew-drive	1×	1	27	assembly
2.1	Servo Motor 4 parts	servo-motor	1×	1	24	assembly
2.1.1	Stator Assembly 3 parts + deeper ›	stator-assembly	1×	1	3	assembly
2.1.2	Rotor Assembly 4 parts + deeper ›	rotor-assembly	1×	1	19	assembly
2.1.3	Encoder	encoder	1×	1	·	part
2.1.4	Motor Housing	motor-housing	1×	1	·	part
2.2	Helical Gear Pair	gear-pair	1×	1	·	part
2.3	Slew Pinion	jib-crane-slew-pinion	1×	1	·	part
2.4	Gearbox Housing	gearbox-housing	1×	1	·	part
3	Slew Friction Brake	jib-crane-slew-brake	1×	1	·	part
4	Rotation Limit Stop	jib-crane-rotation-stop	1×	1	·	part
5	Fastener Set	fastener-set	1×	1	·	part

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Where the slewing unit is used

1 product across 1 domain contain it, directly or inside a sub-assembly

Material Handling 1 Jib Crane

Used in 1 assembly

Jib Crane

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
🇮🇳Bharat Forge bharatforge.com ↗	Pune, IN	Forgings & metal parts	500 pcs	6–10 wks
🇨🇳CITIC Dicastal dicastal.com ↗	Qinhuangdao, CN	Aluminium castings & wheels	500 pcs	6–10 wks
🇮🇳Tata AutoComp 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 sundaram-clayton.com ↗	Chennai, IN	Die castings	500 pcs	6–10 wks