Mini 3PI N20 Robot Ball Caster Wheel

₨240

Compact ball caster support for suitable small robot chassis, with a freely rolling steel ball and plastic housing.

  • Passive support point for a compatible wheeled robot.
  • Ball can roll in different directions as the chassis moves.
  • Useful for suitable compact N20-motor robot designs.
  • Check mounting height, hole spacing and load suitability.
  • Not a powered wheel, motor or complete robot chassis.
Description

Mini ball caster for robot chassis support

This mini robot ball caster uses a steel ball in a plastic housing to provide a passive support point for a suitable small wheeled chassis. The ball rolls as the robot moves and turns, allowing the drive wheels to control the robot’s motion.

The product’s 3PI and N20 wording identifies the intended style of compact robotics project. It does not establish compatibility with every chassis, original-brand provenance or a particular motor installation.

Listed construction and purpose

  • Type: passive ball caster support.
  • Rolling element: steel ball.
  • Housing: plastic.
  • Typical application: an additional support point on a suitable mini robot.
  • Movement: freely rolling in different directions.

Match the caster to your chassis

Check the required ride height against the drive-wheel diameter and chassis mounting position. The support must leave the robot balanced without unloading the driven wheels or dragging the chassis.

Confirm the actual mounting-hole spacing, overall dimensions, rated load and supplied hardware if they are essential to your design. These numerical specifications are not established here. Do not assume compatibility just because a project uses N20 motors.

A small ball caster is generally intended for a suitable smooth running surface. Surface gaps, debris and uneven terrain can affect rolling and clearance; it is not a promise of all-terrain performance.

Build a compatible drive arrangement

Compare the caster height with the 43mm N20 drive wheel and your mounting arrangement. Browse wheels and motor couplings for other project parts.

Frequently asked questions

Does this caster drive the robot?

No. It is a passive rolling support. Separate motors and drive wheels provide propulsion.

Will it fit any N20 robot?

No. Chassis height, mounting geometry and load must suit the actual caster.

Where is its price in Pakistan shown?

The current price and stock appear beside the Add to cart button, with delivery options at checkout.

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