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555 Motor Shaft Adapter 3.17mm to 6mm Connector Stud for DIY Drills and Robotics

555 Motor Shaft Adapter 3.17mm to 6mm Connector Stud for DIY Drills and Robotics

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ComponentSpecification
MaterialHigh-Strength Carbon Steel
Inner Diameter3.17 mm (Fits RS-550/555/545 Motors)
Outer Thread/Shaft6 mm
Fixing MethodDual M4 Grub Screws
Total LengthApprox. 32 mm
FinishAnti-Rust Black Oxide or Galvanized
WeightApprox. 15g to 20g
CompatibilityStandard 3.17mm Motor Shafts
Price
₹ 67.80 ₹ 67.80
(Tax included)

Product Description The 555 DC Motor Shaft Adapter is a precision-engineered coupling designed to bridge the gap between a standard 3.17mm motor shaft and larger 6mm mechanical components. This stud connector is essential for makers looking to convert an RS-555 or RS-550 motor into a mini drill, a powerful fan, or a specialized robotic actuator. By providing a threaded or smooth 6mm extension, it allows for the secure mounting of drill chucks, larger pulleys, or custom-made hubs that are otherwise incompatible with the small motor shaft.

Key Features

  • Precision-bored 3.17mm hole for a perfect slip-fit on 500-series motors.

  • High-strength steel construction to handle high torque and RPM without bending.

  • Dual grub screw locking mechanism for maximum grip and safety.

  • Extended 32mm length provides necessary clearance for mounting hardware.

  • Versatile 6mm output allows compatibility with a wide range of industrial parts

Technical Details

  • Inlet Diameter: 3.17 mm

  • Outlet Diameter: 6.0 mm

  • Overall Length: 32 mm

  • Locking Screw Size: M4 (Included)

  • Rotation Stability: Concentricity optimized for high-speed rotation

  • Torque Rating: Suitable for high-torque RS-555 applications

  • Material Hardness: Heat-treated for wear resistance

  • Corrosion Resistance: Blackened surface treatment

Prototyping and Engineering Tips from Robogears

  • Shaft Preparation: Before installing the adapter, use a fine piece of sandpaper to clean any burrs or oxidation from your motor shaft. This ensures a perfectly centered fit and reduces vibration at high speeds.

  • Securing the Connection: Always align one of the M4 grub screws with the "D-cut" or flat portion of the motor shaft if available. Use a drop of blue thread-locker (Loctite) on the grub screws to prevent them from loosening due to motor vibration.

  • Alignment Check: After tightening, spin the motor at a low voltage and observe the tip of the adapter. If you notice a "wobble," loosen the screws, rotate the adapter 90 degrees on the shaft, and re-tighten to find the point of best balance.

  • Load Placement: When mounting heavy pulleys or chucks, try to keep the load as close to the motor body as possible to minimize the leverage on the motor bearings, which helps extend the life of your motor.

Package Includes

  • 1 x 3.17mm to 6mm Shaft Adapter Stud

  • 2 x M4 Grub Screws (Pre-installed or included)

Disclaimer Product images are shown for illustrative purposes only and may vary from the actual product due to manufacturing changes, lighting conditions during photography, or batch updates. While we strive for accuracy, technical specifications, including exact length and screw type, are subject to change by the manufacturer without prior notice. Please ensure the adapter is securely fastened before operating the motor at high speeds to prevent mechanical failure or injury. Ensure the motor shaft diameter is exactly 3.17mm before purchasing.