AndyMark EVO Shifter Short Keyed Shaft, StageA 2 - 16.37:1 Ratio, StageB 2 - 04.77:1 Ratio
Description
- AndyMark EVO Shifter Short Keyed Shaft, StageA 2 - 16.37:1 Ratio, StageB 2 - 04.77:1 Ratio
- Incorporates refined 4-tooth dog shifting for smooth transitions
- Supports two or three interior stages for output flexibility
- Features durable AMPCO® 18 Bronze dog gear
- Allows easy disassembly and reassembly
- Operates with a pneumatic shift method for reliability
The AndyMark EVO Shifter Short Keyed Shaft, StageA 2 - 16.37:1 Ratio, StageB 2 - 04.77:1 Ratio represents a significant advancement in shifting transmission gearboxes. This two-speed, shift-on-the-fly gearbox incorporates a refined 4-tooth dog shifting mechanism, allowing for seamless transitions between speeds. It is compatible with two CIM or NEO motors and can be configured with either two or three interior stages, offering flexibility in output shaft selection. The gearbox is delivered assembled, though motors are not pre-installed.
Several enhancements distinguish this model from previous iterations. The dog gear now features four dogs per face, enhancing durability by providing more material around the gear screw. The use of AMPCO® 18 Bronze for the dog gear material offers properties akin to stainless steel, with added lubricity for smoother shifting. A robust shift block assembly with a larger bearing and threaded steel housing is included, and the input stage employs 32 DP gears with a 15-tooth pinion gear, facilitating a high first stage reduction.
The gearbox allows users to independently select high and low ratios, with the ability to swap ratios as needed. It supports various encoder options, including the US Digital E4T and the CTRE SRX mag encoder. Weight reduction features have been integrated into the gears and plates, and the design permits easy disassembly and reassembly without concern for gear orientation. The gearbox can be mounted to an AM14U family chassis or a 2"x1" box tube frame using existing mounting plate holes.
The EVO Shifter employs a pneumatic shift method, utilizing a spring-extend pneumatic cylinder for shifting. This mechanism ensures that a robot can continue operating in Ratio A even if air pressure is lost. The gearbox requires proper greasing for optimal performance and longevity, with specific instructions for break-in and maintenance provided.
- 1x AndyMark EVO Shifter Short Keyed Shaft, StageA 2 - 16.37:1 Ratio, StageB 2 - 04.77:1 Ratio
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If you are not satisfied with a product purchased from the Site, you may request a return within 30 days from the delivery date, unless the product is listed under the Return Exceptions below or is subject to specific return conditions noted on the product page.
This return policy also applies, as a minimum standard, to products sold and fulfilled by third-party vendors through the Marketplace.
Please review the Return Conditions, Return Exceptions and the process on How to Request a Return Authorization (RA) before initiating a return request.
Returns under this policy concern non-defective products. In the case of a confirmed manufacturing defect, remedies are handled under the Warranty terms, at the Vendor's discretion. See the Warranty section.
Return Conditions
To qualify for a refund under the 30-day return policy, all of the following conditions must be met:
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- The RA number is valid for 30 days. The returned item must be received within that period.
- The RA number must be included with the return.
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- Custom-made, personalized, or special-order items — Products manufactured, configured, adapted, or built to the customer's own specifications and requirements.
- On-Demand Items — Standard catalogue products not stocked by RobotShop and ordered specifically to fulfill a customer request.
- Professional & Specialized Equipment — See the Professional & Specialized Equipment Warranty page and Professional & Institutional Buyers (B2B) section in the Terms & Conditions.
How to Request a Return Authorization (RA)
While the same return policy applies, these orders require a separate contact process for returns.
- RobotShop Fulfilled Orders → submit a support ticket from your account under My Support Tickets.
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Note: Marketplace vendor products are normally labelled with SKUs starting with RM, and identified on the product page with the mention "Sold and fulfilled by [Vendor Name]".