Makita JM21000079 Spare Part - SLIDER B LB1200F

Genuine Makita SLIDER BLOCK — part number JM21000079. Precision replacement slider used in the blade‑guide / height‑adjust assembly of the Makita LB1200F 305 mm (12") band saw; Makita’s parts diagram lists this item as “SLIDER BLOCK” (part JM21000079) and shows two slider blocks used on the machine.

What it is and why it matters

- Exact Makita replacement slider block (Makita part JM21000079) designed to restore smooth travel of the blade‑guide/lift mechanism on LB1200F band saws.

- Makita’s exploded parts listing shows the slider block paired with the blade‑guide lifting gear, rack and lifting knob — so worn or broken slider blocks often cause binding, uneven guide movement, or sloppy height adjustment. (This description is based on the parts diagram layout and how the components interact.)

Key details

- Part number: JM21000079 (Makita).

- Application: fits Makita LB1200F vertical/bench band saw (305 mm / 12") — listed in Makita’s LB1200F parts diagram.

- Quantity on machine: two slider blocks are shown on the parts diagram (check your machine for one or both needing replacement).

- Sold as the Makita part referenced above; listed in Makita parts lists as “Slider B / Slider Block” for LB1200F.

Simple repair note

- If the guide lift feels rough, sticks, or the blade guide won’t hold position, replacing the slider block(s) JM21000079 is the direct Makita specified fix shown in the parts diagram.

(Part and fitment information taken from Makita’s LB1200F parts diagram and Makita parts listings.)