GN 784-ASwivel Ball Joints

Ball with internal thread

Aluminum

Technical datasheet

GN 784-A

Ball with internal thread

GN 784-B

Ball with external thread

GN 784-A

Catalogue	d₁	d₂*	d₃*	d₃* Inch thread	d₅*	d₆	d₇	d₈	h₁	h₂	h₃	k

GN 784-23-M4-A-1-ELS	23	M 4	-	-	M 5	14	11	2.5	26.6	21.7	10.6	32
GN 784-23-M5-A-1-ELS	23	-	M 5	-	M 5	14	11	2.5	26.6	21.7	10.6	32
GN 784-23-1/4-A-1-ELS	23	-	-	1/4 (= 1/4-20)	M 5	14	11	2.5	26.6	21.7	10.6	32
GN 784-31-M5-A-1-ELS	31	M 5	-	-	M 6	18	14	3.5	35.5	29.6	14.9	36
GN 784-31-M6-A-1-ELS	31	-	M 6	-	M 6	18	14	3.5	35.5	29.6	14.9	36
GN 784-31-1/4-A-1-ELS	31	-	-	1/4 (= 1/4-20)	M 6	18	14	3.5	35.5	29.6	14.9	36
GN 784-39-M5-A-1-ELS	39	M 5	-	-	M 8	24	15	4.5	45	37.2	18.9	44
GN 784-39-M6-A-1-ELS	39	-	M 6	-	M 8	24	15	4.5	45	37.2	18.9	44
GN 784-39-M8-A-1-ELS	39	-	M 8	-	M 8	24	15	4.5	45	37.2	18.9	44
GN 784-39-3/8-A-1-ELS	39	-	-	3/8 (= 3/8-16)	M 8	24	15	4.5	45	37.2	18.9	44
GN 784-49-M8-A-1-ELS	49	M 8	-	-	M 8	28	19.5	4.5	56	46.1	24	49
GN 784-49-3/8-A-1-ELS	49	-	-	3/8 (= 3/8-16)	M 8	28	19.5	4.5	56	46.1	24	49
GN 784-49-M10-A-1-ELS	49	-	M 10	-	M 8	28	19.5	4.5	56	46.1	24	49

* The usable thread depth for d₂ / d₃ / d₅ is 1,5x the thread diameter for metric threads and 1,2x the thread diameter for inch-based threads.

Types

Type A: Ball with internal thread

Type B: Ball with external thread

Identification no.

No. 1: Clamping with adjustable hand lever

No. 2: Clamping with set screw

Housing

Aluminum

Anodized, black ELS

Base plate, ball

Aluminum, plain finish

Adjustable hand lever (Identification no. 1)

Zinc die casting

Powder coated

Silver RAL 9006, textured finish

Threaded stud and retaining screw

Stainless steel AISI 303

Set screw (Identification no. 2)

Stainless steel AISI 304

Swivel ball joints GN 784 allow precise and stepless adjustment of the ball pivot within the swivelling range. This is a particular advantage when adjusting scanners, cameras, lighting, monitors, etc.

Thanks to the efficient clamping mechanism, only small amounts of torque on the clamping screw result in comparatively strong clamping pressure on the ball. This force is easily applied by the clamping lever (Identification no. 1).

The ball joint can be mounted from below with the d₅ internal thread or together with the GN 784.1flange, available as an accessory, using three through-holes from above.

For a permanent high stop torque, the contact surfaces of the balls must be kept free of grease. Exceeding the recommended tightening torque increases the securing of the ball joint in its end position, but may result in increased wear and potential failure of the clamping mechanism.