JHC-2020S Centerless Grinder

Key Features

• 0.04” – 2” diameter grinding capacity

with standard work rest

• Grinding wheel size 20” x 8” x 10”

• Regulating wheel 12” x 8” x 5”

• 20 HP main grinding wheel motor

• Compact design for minimum use of

the shop floor space

• Easy controls for maximum work efficiency

• Automatic lubrication with safety interlock

to prevent machine operation when there

is no lubrication present

• Hydraulic dresser for both grinding and

regulating wheels insure smooth and

evenly trued wheels

General Specifications:

Grinding range (standard work rest)	0.04” – 2” (1-50 mm) diameter
Grinding range (special work rest)	1.5” – 4” (40-100 mm) diameter
Grinding wheel size	20” x 8” x 12”
Regulating wheel size	12” x 8” x 5”
Grinding wheel speed	1200 RPM
Regulating wheel speed	10 steps, 13 – 316 RPM (10 - 250 RPM, Infinitely variable speed for S model)
Grinding wheel motor	20 HP (1200 RPM)
Regulating wheel motor	3 HP (1200 RPM) (2.9 Kw servo motor for S model)
Hydraulic pump motor	1 HP (1800 RPM)
Coolant pump motor	1/4 HP (3600 RPM)
Upper slide feed graduation	0.0001” (0.200” per rev)
Lower slide feed graduation	0.0002” (0.400” per rev)
Lower slide micro feed	0.000050” (grad) 0.010” (rev)
Dressing device graduation	0.0005” (grad) 0.050” (rev)
Regulating wheel tile angle	+5 ~ -3 deg
Regulating wheel swivel angle	+/- 5 deg
Shipping dimension	125” x 55” x 75”
Net weight (approx)	7040 lbs
Gross weight (approx)	7700 lbs

OPTIONS AND ACCESSORIES:

Wheel balancing base and arbor

Hydraulic work ejector for in-feed grinding

Manual work feeder for in-feed grinding

Automatic in-feed unit

Unloading attachment for thru-feed grinding

Automatic loading and unloading unit for in-feed grinding

Profile grinding attachment with template and blade

Magazine-type automatic loading unit for thru-feed grinding

Hopper-type automatic loading unit for thru-feed grinding

Long bar grinding support unit

Paper filter and magnetic separator unit

Hydrocyclone coolant filter unit

Vibratory feeder for thru-feed grinding