JNG-4000 Knife Grinder

Key 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

General Specifications:

Magnetic chuck size	7.87" x 157.5"
Magnetic chuck tilt angle	+/- 90°
Worktable(grinding wheel) cross feeding speed	118.11" - 630" / min
Min. grinding wheel infeed	0.000196"
Max. working height	4.33"
Coarse grinding wheel speed	1435 RPM(50HZ) \| 1720 RPM(60HZ)
Coarse wheel	Ø 12" x 5" x 1"
Fine wheel	Ø 6" x 2.6" x 2"
Grinding wheel tilt angle	0 - ± 5°
Parallelism of ways to chuck surface	±0.000393" (<118.11"); ±0.00059" (137.8", 157.5")
Coarse wheel motor	30 HP X 4P (22.5KW)
Fine wheel motor	1 HP X 4P (0.75KW)
Coolant pump	1 HP (0.75KW)
Worktable cross feeding motor	1/3 HP X 6P (0.25KW)
Packing size(L X W X H)	125” x 59” x 83”
Machine net weight	14,815 lbs