Trackball Ball Sizes and Replacement

By Xah Lee. Date: . Last updated: .

Find Trackball Ball Size

First, find your trackball ball size at Trackball Reviews. For old trackball, check Trackball History ๐Ÿ–ฒ

Ball Diameter Tolerance

Ball size differ by 1 or 2 mm is not a problem. More may be a problem.

76.2 mm Ball

RetroArcade translucent ball qwtwq-s590x512 trackball Ball. 3 inch Translucent Buy at amazon
Suzo Happ Trackball 2022-05-23
Suzo Happ Trackball Replacement - 3 inch - Arcade MAME 55-0200 Buy at amazon

76.2 mm and 57.15 mm Ball

electric ice rgb trackball
3 inch (76.2 mm) or 2.25 inch (57.15 mm). Translucent ball, designed for LED modification. (So lights makes the ball glow evenly. Crystal ball have focus effect.)

(57.15 mm = 2 1/4 inch) American-style Billiard Ball

This set is highly recommended. The fuzzy coloring provides better tracking. Also lighter then normal billiard.

Kandy Pearl Billiards Ball Set 2022
Kandy Pearl Billiards Ball Set. Hi-Gloss, Swirl Marbleized 16 Piece Pool Balls. Full 2 1/4 Size (Lighter Than Regulation Weight) Wet Look and Brilliant Colors KPBS Buy at amazon
8ball SPXbC
2.25 inch (57 mm)
Aramith Premier Replacement Pool Ball Buy at amazon
cue ball 6KGS4
2.25 inch. (57 mm)
Aramith Super Pro-Cup Pool Cue Ball 2.25 inch, 6 Red Dots Buy at amazon

55 mm Ball

Perixx 55 mm Ball
Perixx 55 mm Ball

Perixx 55 mm Ball Buy at amazon

52.388 mm (2 1/16 inch), Snooker ball

Snooker Ball Set
Snooker Ball Set

Buy at amazon

50 mm Ball

longwin 50mm crystal ball 89352
Longwin 50 mm crystal ball Buy at amazon

40 mm Ball

longwin 40mm crystal ball 04197
longwin 40 mm crystal ball Buy at amazon

โ€œK9 crystalโ€ is a type of high-tech glass. Light weight, and good optical property (e.g. no bubbles inside).

Note: it may not track well. I have not tried.

38.1 mm (1.5 inch) miniature pool ball

miniature pool ball 2024
miniature pool ball 2024

34 mm Ball

trackballs cFsR5-s250 trackballs 2020-10-29 YSmSr
34 mm ball
Logitech Trackman Marble replacement ball-s

Crystal/Quartz Ball

Few things to be aware:

purple crystal ball 40mm 24581
glass ball crystal ball

Kensington Orbit Trackball with Scroll Ring, with Quartz Ball

Kensington Orbit Trackball with Scroll Ring

Kensington Orbit Trackball scroll ring ball 64446-s
quartz ball 68851-s
quartz ball
Kensington Orbit Trackball scroll ring quartz ball-s
Kensington Orbit Trackball with Scroll Ring. Lighting effect with a quartz ball, more beatiful than can be captured by a photo. [image source reddit ]

Inche to Millimeter Conversion Table