Polyformer Bearings Kit

Bearing set for a Polyformer build: this kit bundles the small and large bearings used around the bottle-cutting and motion sections of the open-source Polyformer PET-bottle-to-filament machine.

What is included

• 8 × 623 bearings — 3 × 10 × 4 mm miniature bearings for the Polyformer cutter/idler hardware.
• 3 × 608 bearings — 8 × 22 × 7 mm bearings for the larger rotating assemblies.

Why this kit

• Pulls the Polyformer bearing sizes into one small hardware pack instead of making you source two separate bearing lots.
• Matches the bearing families called out in the official Reiten966 Polyformer project BOM.
• Pairs with the live Polyformer Kit by Reiten966 and Polyformer Fasteners Kit.

Specs

• 623 bearing size: 3 mm ID × 10 mm OD × 4 mm width.
• 608 bearing size: 8 mm ID × 22 mm OD × 7 mm width.
• Project fit: Polyformer, the open-source machine for turning PET bottles into 1.75 mm 3D-printer filament.

Not for

• This is the bearings-only kit. Printed parts, electronics, hotend parts, rods/tubing, fasteners, and drill bit are not included.
• Not a universal bearing assortment; buy it when you specifically need the Polyformer bearing pack.