AndyMark EVO Slim 22.67:1 Ratio, 3.875in Shaft Length
Description
- AndyMark EVO Slim 22.67:1 Ratio, 3.875in Shaft Length
- Enhances robot drive trains
- Allows up to 3-motor customization
- Utilizes robust steel gears
- Features durable aluminum plates
- Includes 15 Tooth 32DP pinion gear
The AndyMark EVO Slim 22.67:1 Ratio, 3.875in Shaft Length is a high-performance, lightweight gearbox designed to enhance the drive trains of competition robots. This single-speed gearbox is part of the EVO Slim line, which shares several components with the EVO Shifter, including weight-relieving features, robust steel gears, and durable aluminum plates. It is delivered in kit form, allowing for customization and assembly to accommodate up to three motors, although motors are not included in the package.
The gearbox utilizes a 15 Tooth 32DP pinion gear, which is included and does not require a key. For those who prefer not to install the pinion themselves, motors with pre-installed pinions are available separately. The installation process for the pinion varies depending on the motor type, with specific procedures for both NEO and CIM motors. The NEO motor requires a 3-ton arbor press for installation due to the interference fit, while the CIM motor may require either a slip fit or a press fit, depending on manufacturing tolerances. In both cases, the application of red Loctite 271 is recommended to ensure a secure fit.
The EVO Slim gearbox is compatible with either the E4T Optical Encoder Kit or the SRX Mag Encoder, necessitating a 3D printed mount plate for installation. Future iterations will include pre-drilled holes in the motor plates to accommodate the Encoder Mount Pad. When using the SRX Mag Encoder, additional mounting hardware is required to ensure proper installation and functionality.
Note: Ensure proper safety measures are followed during the installation of pinions and encoders to prevent damage or injury.
The gearbox is shipped in kit form, not assembled, with hardware to accept 3 motors. Please note motors are not included with these gearboxes.
- Input stage gear material: 1117 steel
- Input stage gear type: 32DP, 20-degree pressure angle, spur
- Motor input: CIM, NEO
- Motor quantity: 1, 2, 3
- Output shaft: 1/2 in. hex
- Output shaft material: 4140 steel
- Output stage gear material: 4140 steel
- Output stage gear type: 20DP, 14.5-degree pressure angle, spur
- Plate material: 6061 aluminum
- Ratio: 22.67:1
- Weight: 1.84 lb
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Refund Policy
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:
- A valid Return Authorization (RA) number must be obtained prior to returning the product. Returns without an RA number will be refused.
- 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.
- Products must be returned in unused, unmodified condition (e.g., no scratches, alterations, missing parts, or signs of installation/use) and in their original packaging, suitable for resale.
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- Refunds are processed within 7 days after receipt and inspection of the returned item.
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- Used, damaged, or modified products — Items that show signs of use, wear, or alteration, making them unsuitable for resale.
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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.
- Marketplace Vendor Orders → submit a ticket from your account under My Marketplace Tickets to contact the vendor directly.
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]".