Web Site:
www.parallax.com
Forums:
forums.parallax.com
Sales:
sales@parallax.com
Technical:
support@parallax.com
Office:
(916) 624-8333
Fax:
(916) 624-8003
Sales:
(888) 512-1024
Tech Support:
(888) 997-8267
Motor Mount and Wheel Kit –AL and –MP
–AL (#28962, aluminum) and –MP (#28963, molded plastic)
Each kit includes a 36-position Quadrature Encoder Set (#29321)
The Parallax Motor Mount and Wheel Kit –AL (aluminum) and –MP (molded HDPE plastic) are complete
mechanical drive systems for sturdy and robust mid-sized mobile robots. Each kit is comprised of two
independent drive assemblies that are mirror images of each other. Each assembly contains a right-angle
worm-drive gear motor, axle and ball bearing unit, a six-inch pneumatic tire with tube, and an integrated
encoder system that provides feedback to the microcontroller or processor of your choice.
This kit is designed for direct compatibility with our Arlo Robot Base Kit (#28960). It can be mounted to
your own custom robot platform using the pre-tapped holes in the machined 6061 aluminum mounting
blocks (-AL version) or in the pre-drilled holes on the injection molded High-density Polyethylene (HDPE)
mounting blocks (-MP version). These kits are not backwards compatible with the previous Motor Mount
and Wheel Kit with Position Controller (#27971). Please see the Product Compatibility section, page 13.
Features
Both drive systems
HDPE drive system (#28963)
Conveniently located mounting holes for
easy mounting to the Arlo Robot Base
Kit or your own robotic platform design
Rugged pneumatic tires well-suited for
indoor and outdoor terrain
Powerful worm-drive DC gear-motors
mount on precision injection molded
High-density Polyethylene (HDPE) Motor
Mount Blocks
Powerful and strong, yet light weight
Aluminum drive system (#28962)
Powerful worm-drive DC gear-motors
mount on precision machined 6061 solid
aluminum Motor Mount Blocks
Able to carry up to 60 lbs. of payload
Able to carry up to 20 lbs. of payload
Encoders
36-position Quadrature Encoders
provide up to 144 pulses per revolution
Dual-signal, out-of-phase outputs
indicate direction
Pulse widths indicate speed; number of
pulses indicate distance traveled
Easy to integrate with your robotic
system designs
Key Specifications
Drive system
Encoders
DC Motor nominal operating voltage:
12.0 VDC
No load current: approx. 1.50 A
1.5 lbs. per drive assembly (two
included in this kit)
Approx. 100 RPM @ 12.0 VDC, 1.50 A,
no load
Power requirements: 2.5 VDC @ 3.5
mA, 3.0 VDC @ 5.0 mA, 11.6 mA @
5.5 VDC max.
Communication: dual-channel high/low
pulse output
Dimensions: 2.0 x 1.1 x .25 in
(5.1 x 2.7 x 0.6 cm)
Operating temp: 32–158 °F (0–70 °C)
Copyright © Parallax Inc.
Motor Mount and Wheel Kit -AL(#228962) –MP(#28963) v1.1 1/21/2015 Page 1 of 13
Bill of Materials for #28962 (Aluminum)
Part #
750-90005
750-90006
29321
34030
34015
34016
34031
700-00100
710-00015
710-00031
710-00105
713-00030
721-00006
724-00001
725-00023
725-00024
Description
Motor, 12 VDC (left)
Motor, 12 VDC (right)
36-position Quadrature Encoder Set (contains 2 encoder assemblies)
Motor Bearing Block 2 Aluminum
Wheel, main rim – 6061 Aluminum
Wheel, rim ring – 6061 Aluminum
Robot Drive Axle 2
1/8 x 1” Roll Pin
Screw, #4-40x1/2”, FH, SS
Screw, M6,1 mm x 50 mm SH, Black
Screw, #1/4-20x5/8”,BH,SS
Spacer 0.50” x 1”, RND, AL
Knobby Tire, 6” x 1-1/4” Rubber w/tube
0.5” ID x 1.125” OD Ball Bearing
Hex Key, 5 mm
Hex Key, 5/32”
Quantity
1
1
1
2
2
2
2
2
12
6
2
6
2
2
1
1
Bill of Materials for #28963 (Molded Plastic)
Part #
750-90005
750-90006
29321
34031
34040
34041
700-00100
710-00045
711-00008
710-00031
710-00105
713-00030
721-00006
724-00001
725-00023
725-00024
Description
Motor, 12 VDC (left)
Motor, 12 VDC (right)
36-position Quadrature Encoder Set (contains 2 encoder assemblies)
Robot Drive Axle 2
Motor Bearing Block 2MP
Robot Rim Set 2MP
1/8 x 1” Roll Pin
Screw, #4-40x1”, FH, SS
#4-40 Acorn Nut
Screw, M6,1 mm x 50 mm SH, Black
Screw, #1/4-20 x 5/8”, BH, SS
Spacer 0.50” x 1”, RND, AL
Knobby Tire, 6” x 1-1/4” Rubber w/tube
0.5” ID x 1.125” OD Ball Bearing
Hex Key, 5 mm
Hex Key, 5/32”
Quantity
1
1
1
2
2
2
2
12
12
6
2
6
2
2
1
1
Tools Required
•
•
•
•
•
Hex Keys: 5 mm and 5/32” (included)
Screwdriver: #1 Phillips and flathead combination screwdriver (not included)
Small wooden mallet or small regular hammer (not included)
Wood block (not included)
Tire pump and air chuck (preferably a bicycle hand pump, not included)
Assembly Instructions
Although two sets are included in your kit, these assembly details depict one motor assembly. You will
need to assemble both sets – one is a mirror image of the other.
Copyright © Parallax Inc.
Motor Mount and Wheel Kit -AL(#228962) –MP(#28963) v1.1 1/21/2015 Page 2 of 13
Step 1: Axle
Align the axle’s socket with the motor’s square drive shaft and press-fit it into place.
Although the axle is precision machined to fit with the motor shaft, sometimes the axles will slide on
effortlessly, or they may require a very gentle tap from a non-steel hammer to seat them as shown
below. This is due to manufacturing tolerances on the motors.
When you first put the axle on the shaft it may seem loose and wiggle around a bit…this is normal. Once
you install the block and screws the wiggle will almost entirely disappear. This is well within the drive
system and encoder’s resolution design parameters.
When the drive shaft is all the way on the motor drive pin, it should look like this. The distance between
the motor housing and the large end of the axle should be approximately one-tenth of an inch.
Gap should be
0.1 inch
(2.5 mm) wide
Copyright © Parallax Inc.
Motor Mount and Wheel Kit -AL(#228962) –MP(#28963) v1.1 1/21/2015 Page 3 of 13
Step 2: Encoder Disk
Next, remove any debris from the internal fins on the encoder disk (a toothpick, fingernail or tiny
screwdriver work well). Slide the encoder disk onto the drive shaft. The internal teeth on the disk will
deform slightly and grip the shaft.
Step 3: Bearing
Slide the bearing onto the drive shaft.
Copyright © Parallax Inc.
Motor Mount and Wheel Kit -AL(#228962) –MP(#28963) v1.1 1/21/2015 Page 4 of 13
Step 4: Bearing Block
Insert the motor and axle assembly into the Bearing Block. The Bearing Blocks are interchangeable, and
therefore can be used on either side of the device. Be certain that the bearing is completely seated
within the cavity – it should be a very snug fit.
Step 5: Bearing Block and Drive Pin
Insert the drive pin into the axle. Use a non-marring hammer (or be very careful with a regular
hammer), and tap it in gently. It should be a “friction” fit.
Copyright © Parallax Inc.
Motor Mount and Wheel Kit -AL(#228962) –MP(#28963) v1.1 1/21/2015 Page 5 of 13
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
