Super Shifter

This shift-on-the-fly gearbox, uses a dog gear shifting method. Motor input accepts two CIM motors, two AM Planetary Gearboxes , or a combination of either (both not included). The output shaft is a 1/2 in. 4140 steel shaft with a 1/8 in. keyway.

The Super Shifter includes hardware for pneumatic shifting; the pneumatic cylinder is not included. Pneumatic shifting hardware is installed as standard. Servo shifting hardware is available as an additional hardware package ( am-2442).

Three differences compared to the AM Shifter design:

• An extra reduction stage is included. This stage allows for direct drive applications of 4 in., 6 in. and 8 in. wheels.
• The output shaft extends from the side of the gearbox, as opposed to being captured within the side plates.
• A 2" wide aluminum box tube is used as a protective spacer, safely enclosing the transmission.

Shift Style:
Two shifting methods are available for the Super Shifter. The pneumatic method is much stronger and faster than the servo method.

• Pneumatic:
• A pneumatic cylinder, Bimba model 04-0.5-DP, 3/4 in. bore x 1/2 in. stroke, (not included) shifts between high and low gear. This cylinder mounts with a 5/8-18 nut (not included). This is a strong, fast method of shifting, lasting under 0.5 seconds and pushing with 26 Lbs. of force (if using 60 psi). This pneumatic shift can be done while a robot is accelerating.

• Servo:
• A Servo Shifting hardware pack is available (am-2442), but not included with this product.
• A Hi-Tech Servo, model HS-322HD, is included in am-2442, using an actuation fork to shift between the 2 gear settings. This is a slow, weaker method of shifting (compared to pneumatic), taking 1.5-2 seconds and pushing with up to 8 Lbs. of force. A robot driver may need to back off of the throttle to let a servo shift gears while moving.

Total Weight: approx. 4.0 lbs., without motors or pneumatic cylinder installed

Gear Ratios Options:

Part #	Ratio High:Low	Low Gear Ratio	High Gear Ratio	Small Output Gear	Medium Cluster Gear	Final Stage Large Gear	Final Stage Small Gear
am-0114	2.56 : 1	24.0 : 1	9.4 : 1	35 tooth	28 tooth	45 tooth	20 tooth
am-2253	4.1 : 1	24.0 : 1	6.0 : 1	28 tooth	35 tooth	45 tooth	20 tooth

Product Usage:
All AndyMark gearboxes require grease for proper operation and long life. We suggest using our red, tacky grease, am-2768. We also encourage that the user powers the gearbox continuously for 30 minutes without grease to allow the gear teeth to wear in. While we do design with short run times in mind, this 'run in' period for smooth gearbox operation, is recommended. Once this is completed, thoroughly grease the gear teeth periodically to ensure smooth operation.

To purchase individual parts to change ratios on your own, see Optional Parts Sold Separately below.

Included Hardware:
Attached Hardware:

• Shielded, flanged ball bearings
• 4140 steel 20 dp gears, w/ 14.5 degree pressure angle
• 1/4" thick aluminum side plates
• AM-3132 Encoder and Cable

Loose Hardware:

• Two - CIM gears (12 tooth)
• Two - 5/16" retaining clips
• Two - 2mm x 2mm machine keys
• Four - #10-32 screws, for motor mounting
• One - 1/4-28 screw for servo actuation
• One - 1/4-28 nut
• One - 0.33" id plastic spacer (for installation between motor and 12 tooth gear)
• Six - 5/16" id washer to space out CIM gear (3 for each motor)

Motor Input:

• Designed for 2 (or 1) motor inputs
• Use CIM motors or AM Planetary Gearboxes or a combination of both

Optional Parts Sold Separately:

• am-0114 & am-2253 Final Stage: 45:20 gear set

• am-0114 : 35 Tooth Small Output Gear and 28 tooth Medium Cluster Gear
• am-2253 : 28 Tooth Small Output Gear and 35 Tooth Medium Cluster Gear

Optional Super Shifter Output Shafts:

• Long SS Wheel Shaft (output shaft, sticking out 3.94")
• Long SS Hex Shaft: this is an extended intermediate shaft, used if the final stage is not needed
• Hex SS Wheel Shaft provides a hex output shaft, if a FR8ZZ-Hex bearing is used.
• Hex SS Long Wheel Shaft provides a longer hex output shaft, if a FR8ZZ-Hex bearing is used.

Weight Reduction:

• An aluminum Hex SS Wheel Shaft can replace the standard steel Wheel Shaft
• Four 2" long spacers can replace the black box extrusion, but this exposes interior gearing.

Common Parts:
The Super Shifter uses many of the same fabricated parts as the AM Shifters (am-0001 or am-0957) transmissions: CIM gears (12 tooth), Large Cluster Gear, Medium Cluster Gear, Small Output Gear, Large Output Gear, Dog Gear, Cylinder plate, Shifter Shaft, and Shift Block
Encoder Alignment: The encoder wheel fits on the back end of the Wheel Shaft so that the outer face of the encoder wheel is aligned at the same level as the tips of the encoder clip posts, as shown in this picture:



Mounting the Servo Shifting Hardware: