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

(Shown with optional 5:1 metal gears)

SPG400A Hub Mount with screws1

Shown with 90° Tube Clamp hubs and hollow 5/8” diameter tubing

Shown with 6” ABS Disc

SPG400A-BM Side Schematic
SPG400A-BM Top Schematic
SPG400A-BM Outline1
SPG400A-BM Side
SPG400A-BM Top
SPG400A-BM End
SPG400A-BM with can
SPG400A-BM with disc
SPG400A-BM with DDT560

Shown with DDT560 Tilt System

SPG400A-BM with DDT500

Shown with DDT500 Tilt System

SPG400A-BM with Tube
SPG400A-BM with dual arm
SPG400A-BM End Schematic

 Build Your Power Servo

Price:

 Starting at $101.48 w/Servo

Part:

 SPG645A-BM

Status:

In-Stock 

Servo:

 

Ratio:

 

Kit:

 

Qty:

 

 

 SPG645A-BM

Maximum Rotation

Weight
(with Servo)

4.8V Power
(ounce-inch)

6.0V Power
(ounce-inch)

4.8V Speed
(sec/60°)

6.0V Speed
(sec/60°)

HS-645MG (2:1 ratio)

180°

12.9 oz.

214

266

.48 sec.

.40 sec.

HS-645MG (3:1 ratio)

180°

12.9 oz.

321

399

.72 sec.

.60 sec.

HS-645MG (4:1 ratio)

180°

12.9 oz.

428

532

.96 sec.

.80 sec.

HS-645MG (5:1 ratio)

180°

12.9 oz.

535

665

1.20 sec.

1.00 sec.

HS-645MG (8.6:1 ratio)

180°

14.3 oz.

920

1,143

2.06 sec.

1.72 sec.

HS-645MG (13.5:1 ratio)

180°

15.8 oz.

1,444

1,795

3.24 sec.

2.70 sec.

1,795 oz-in. of torque from a $31.99 servo....easily done with the new SPG645A-BM (Bottom Mount)
Servo Power Gearbox. The all new structure is machined from high-strength 6061-T6 aluminum. The hardened 3/8” stainless steel final shaft is supported by dual ABEC-5 precision ball bearings that not only allow extremely smooth operation but can also support up to 200 pounds of vertical and horizontal load. The military grade potentiometer is coupled to the final output shaft. With six optional gear ratios, you are sure to find the right combination of power and speed for your project although the gear ratios can easily be changed. Mounting various attachments is simple with the four 5-40 tapped holes in the aluminum clamp hub. Mounting tabs are .125” thick. Build your own custom SPG645A-BM by choosing the ratio you need in assembled or kit form (full instructions included). Patented

* 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

 

1,795 oz-in.

 

0.40 sec/60° (2:1 ratio)

Normal operation of most servos is 90° but they can operate to 180° when given a pulse signal ranging from 700usec to 2300usec. Since most R/C controllers cannot generate this wide of signal range, you will need to purchase our servo stretcher for 180° operation.

Servo Angle Schematic 750-2250 180 3.14

Click here to watch a video of our Standard Rotation Bottom Mount Servo Gearbox in action.

ServoCity video - click to play
Patented

This gearbox utilizes a
0.625” hub pattern.
Click here for more information.

625 Hub Pattern Logo

Copyright 1999-2012 Robotzone, LLC. - All Rights Reserved
ServoCity is a registered trademark of Robotzone, LLC.

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SPG645A-BM Standard Rotation
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