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J2 Shoulder Axis Module parts and their functions

6 top-level parts · 30 parts in total · full bill of materials below

#	Part	Qty	What it does
1	Servo Motor 4 parts	1×	Brushless motor with an integrated encoder or resolver, driven in closed loop to hold commanded position, speed, or torque precisely.
2	Strain-Wave Reducer	1×	Strain-wave reducer
3	Absolute Joint Encoder	1×	17-bit absolute optical encoder with battery backup.
4	Cross-Roller Bearing	1×	Crossed-roller slew bearing taking combined radial, axial and moment loads.
5	Gearbox Housing	1×	Rigid cast housing that holds the gears and bearings in alignment, contains the lubricant, and mounts the gearbox to the machine.
6	Oil Seal	2×	Spring-loaded rotary lip seal that keeps lubricant inside a housing and dirt out where a shaft passes through, sized to DIN 3760.

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Build & assembly graph

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Bill of materials for J2 Shoulder Axis Module

6 top-level lines · 17 rows shown · 30 parts total · indented to 3 levels

#	Item / sub-assembly	Part no.	Qty/assy	Ext. qty	Parts	Type
1	Servo Motor 4 parts	servo-motor	1×	1	24	assembly
1.1	Stator Assembly 3 parts	stator-assembly	1×	1	3	assembly
1.1.1	Stator Core (laminations)	stator-core	1×	1	·	part
1.1.2	Copper Winding	copper-winding	1×	1	·	part
1.1.3	Slot Insulation	stator-insulation	1×	1	·	part
1.2	Rotor Assembly 4 parts	rotor-assembly	1×	1	19	assembly
1.2.1	Rotor Shaft	rotor-shaft	1×	1	·	part
1.2.2	Rotor Core	rotor-core	1×	1	·	part
1.2.3	Neodymium Magnet	neodymium-magnet	16×	16	·	part
1.2.4	Ball Bearing	ball-bearing	1×	1	·	part
1.3	Encoder	encoder	1×	1	·	part
1.4	Motor Housing	motor-housing	1×	1	·	part
2	Strain-Wave Reducer	screwdriving-robot-reducer	1×	1	·	part
3	Absolute Joint Encoder	screwdriving-robot-encoder	1×	1	·	part
4	Cross-Roller Bearing	screwdriving-robot-cross-roller-bearing	1×	1	·	part
5	Gearbox Housing	gearbox-housing	1×	1	·	part
6	Oil Seal	oil-seal	2×	2	·	part

Where the J2 shoulder axis module is used

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

• Robotics & Automation 1 Robotic Screwdriving Cell

Used in 1 assembly

Six-Axis Robot Arm

Sourcing: possible vendors

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–$100. How estimates work

Vendor	HQ	Specialty	MOQ	Lead time
🇨🇳Foxconn foxconn.com ↗	Shenzhen, CN	Electronics contract mfg	1,000 pcs	6–10 wks
🇸🇬Flex (Singapore) flex.com ↗	Singapore	Electronics contract mfg	1,000 pcs	6–10 wks
🇮🇳Dixon Technologies dixoninfo.com ↗	Noida, IN	Electronics contract mfg	1,000 pcs	6–10 wks
🇨🇳BYD Electronics bydelectronic.com ↗	Shenzhen, CN	Electronics contract mfg	1,000 pcs	6–10 wks
🇸🇬Venture Corp venture.com.sg ↗	Singapore	Electronics contract mfg	1,000 pcs	6–10 wks