SPG785A Top Mount

1,573 oz-in.

0.46 sec/60° (2:1 ratio)

SPG785A Servo	Rotation	Weight (No Servo)	4.8V Power (ounce-inch)	6.0V Power (ounce-inch)	4.8V Speed (sec/60°)	6.0V Speed (sec/60°)
HS-785HB (2:1 ratio)	630°	9 oz.	306	366	.57 sec.	.46 sec.
HS-785HB (3:1 ratio)	420°	9 oz.	459	549	.84 sec.	.69 sec.
HS-785HB (4:1 ratio)	315°	9 oz.	612	732	1.12 sec.	.92 sec.
HS-785HB (5:1 ratio)	252°	9 oz.	765	915	1.40 sec.	1.15 sec.
HS-785HB (8.6:1 ratio)	146°	9.8 oz.	1,315	1,573	2.40 sec.	1.97 sec.

SPG785A shown with optional metal gears (5:1 ratio)

Hollow shaft allows wires from cameras, sensors or other attachments to go through the center shaft.

Dual ball bearings support the 3/8” hollow shaft.

Servo can be moved slightly forward to adjust the gear mesh.

SPG785A is about the same size as a soda can.

The 3/8” hollow shaft can easily be adjusted.

Attaching devices is easy using the four (4) tapped 5-40 holes in the gear hub.

Show above with our large double arm.

Plenty of room for your wires coming through the .290” ID hollow shaft.

The SPG785A can take on tremendous slide loads.

SPG785A with an SPT785A attached for tilting.

Build Your Power Servo

Price:

Starting at $99.98 w/Servo

Part:

SPG785A

Status:

Servo:

Ratio:

Kit:

Qty:

* We highly recommend purchasing this unit assembled by our factory. If you are not accustomed to using a soldering iron or handling delicate parts, please order this product assembled ready to plug into your receiver or servo controller. It is money well spent. Thanks

Introducing the all new SPG785A Servo Power Gearbox. Now you can build a servo to your own specifications. A stock HS-785HB servo can rotate 3.5 turns (1.75 turns left or right from center) or 1260° total. When you install the HS-785HB servo into the gearbox, the total amount of rotation is decreased but the power and accuracy is increased. Position feedback remains since the potentiometer is not removed. Trading total rotation for power and precision is what this gearbox is all about. Building your own camera mount and need 360° of pan, this system works perfectly. Simply choose the gear ratio you need (see chart for ratio specs) along with the amount of rotation your application requires. The lower the gear ratio, the more precision and power you will have but with less rotation. The SPG785A can handle tremendous side loads with the dual ABEC-5 precision ball bearing supported hardened 3/8” stainless steel hollow shaft. The shaft is hollow with a .290” inner diameter to allow wires from cameras, sensors or other devices to not tangle during multi-turn rotations. The frame of the SPG785A is machined from 6061-T6 aluminum (anodized) and offers six strong mounting holes in the top plate. Easily mount various attachments to the aluminum hub with four 5-40 tapped holes. Patented

Four 5-40 tapped holes in the mounting hub allows for various attachments.