JNG-4000

Features

Dual coarse and fine grinding wheels allow for grinding efficiency and fine finish
Minimum 0.005mm infeed
Manual and auto grinding cycles; # of passes and infeed amount can be easily set
Tempered stress released steel weldment base
Replaceable hardened (HRC 60°) steel rail ways
Built in auto lubrication

Specification	JNG-2500	JNG-3000	JNG-4000
Magnetic Chuck Size	98.5″ x 7.9″	118.1” x 7.9″	157.5” x 7.9″
Magnetic Chuck Tilt Angle	±90°	±90°	±90°
Worktable (Grinding Wheel) Cross Feeding Speed	3-16 m/min	3-16 m/min	3-16 m/min
Min. Grinding Wheel Infeed	0.0002″	0.0002″	0.0002″
Max. Working Height	4.3″	4.3″	4.3″
Coarse Grinding Wheel Speed	1720 RPM	1720 RPM	1720 RPM
Coarse Wheel	Ø 12.0″ x 4.9″ x Ø 1.0″	Ø 12.0″ x 4.9″ x Ø 1.0″	Ø 12.0″ x 4.9″ x Ø 1.0″
Fine Wheel	Ø 5.9″ x 2.6″ x Ø 2.0″	Ø 5.9″ x 2.6″ x Ø 2.0″	Ø 5.9″ x 2.6″ x Ø 2.0″
Grinding Wheel Tilt Angle	0 – ±5°	0 – ±5°	0 – ±5°
Parallelism Of Ways To Chuck Surface	±0.0004″(<0.1181″), ±0.0006″(0.1378″,0.1575″)	±0.0004″(<0.1181″), ±0.0006″(0.1378″,0.1575″)	±0.0004″(<0.1181″), ±0.0006″(0.1378″,0.1575″)
Coarse Wheel Motor	30 HP x 4P	30 HP x 4P	30 HP x 4P
Fine Wheel Motor	1 HP x 4P	1 HP x 4P	1 HP x 4P
Coolant Pump	1 HP x 4P	1 HP x 4P	1 HP x 4P
Worktable Cross Feeding Motor	1/3 HP x 6P	1/3 HP x 6P	1/3 HP x 6P
Packing Size (L x W x H)	220" x 240" x 260"	280" x 240" x 260"	320" x 240" x 260"
Machine Net Weight	9259 LBS	11111 LBS	14815 LBS