[family-assembly] swivel_ball_joint_mount

[sunzhenchuan007]

Family: swivel_ball_joint_mount
Anchor: JW Winco GN 784 aluminum mounting clamp with swivel ball joint — product page · official PDF

Model the GN 784 cylindrical housing, captured ball, base, and selected clamp actuator in finish ELS. Type A has an internal-thread ball; Type B has an external-thread ball. Identification 1 uses an adjustable lever and 2 a hex-socket set screw. Exclude GN 784.1, payloads, VESA/monitor/speaker hardware, and the on-request hand knob.

Reference images

Engineering drawing	Product photo	Catalog table

Dimension table

Dimensions in mm; — means that the catalog field is unavailable.

Printed row	d1	A: d2; d3 metric/inch	r1 A	r2	B: d4 metric/inch	r1 B	l1
min 23-M4/M5	23	M4; M5/—	17.3	24.8	M5/—	17.3	8
23-1/4	23	—; —/1/4 (1/4x20)	—	24.8	M6/1/4 (1/4x20)	17.3	10
31-M5/M6	31	M5; M6/1/4 (1/4x20)	21.5	32.5	M6/1/4 (1/4x20)	21.5	10
31-M8	31	—; —/—	—	32.5	M8/—	21.5	12
39-M5/M6	39	M5; M6/—	25.5	36.2	M6/—	25.5	10
39-M8/3-8	39	—; M8/3/8 (3/8x16)	—	40.5	M8/3/8 (3/8x16)	25.5	12
49-M8/3-8	49	M8; —/3/8 (3/8x16)	30.8	44.8	M8/3/8 (3/8x16)	30.8	12
max 49-M10	49	—; M10/—	—	51.8	M10/—	30.8	15

Common fields are coupled by d1:

d1	d5	d6,d7,d8	h1,h2,h3	k,l2,m	A/F1,A/F2	clamp/stop torque
23	M5	14,11,2.5	26.6,21.7,10.6	32,22,7	9,2.5	1.5/4.5 Nm
31	M6	18,14,3.5	35.5,29.6,14.9	36,22,9	12,3	2.5/6.5 Nm
39	M8	24,15,4.5	45,37.2,18.9	44,30,12	13,4	4/16 Nm
49	M8	28,19.5,4.5	56,46.1,24	49,30,16	17,4	4/20 Nm

Parameters to verify at claim

• catalog_row: exactly one of the eight printed rows; it supplies the applicable thread and dimension fields together with the matching d1 common row.
• ball_type: A | B; clamp_actuator: 1 | 2; finish fixed to ELS. Only a nonblank published thread alternative is valid.
• Published usable thread depth for d2,d3,d5: 1.5D metric or 1.2D inch.
• The drawing marks 30°, 90°, and 360°; verify their exact meanings before exposing movement parameters. A fixed catalog pose is acceptable.
• Difficulty: easy = d1 31/39 metric, A/2; medium = all metric A/B with both actuators; hard = all eight rows including inch alternatives.
• proportion: socket split/seat, hidden retainer, contact clearance, casting draft, small steps/fillets/chamfers, lever reindexing, screw tips/recesses, pins, thread helices, and surface texture.

Engineering constraints

• Preserve exact whole-row coupling and reject every blank row/type/thread combination.
• Keep ball diameter d6 captured but partly exposed. Base thread d5 and anti-rotation hole d8 at offset m must remain inside positive base material.
• The selected lever or set-screw envelope must clear the ball and housing in the chosen static pose; hidden clamping hardware may be omitted.
• Clamp and stop torques are catalog metadata, not calculated performance. Do not infer any angular range not explicitly supported by the drawing.

[github-actions]

✅ Registry check: swivel_ball_joint_mount collides with none of the 0 known names.

Thanks for the proposal! Whoever claims this verifies it first — the
5-minute evidence check in CONTRIBUTING.md ("Claiming an issue = you verify it"):
standard link real · dimensioned drawing · table with min/max rows · two numbers spot-checked.

Gaps? Fill them yourself (credited) or label needs-evidence with one comment naming what's missing.

新人中文指南: GETTING_STARTED.zh.md · Questions → Discord

[a1423150775-dotcom]

45

[sunzhenchuan007]

55

[JiusongZhou7]

50

[HaozheZhang6]

45

[TimPetrillo]

40