JHC-12 Centerless Grinder

Key Features

• 0.04” – 1” diameter grinding capacity

with standard work rest; up to 1.96”

with special work rest

• Grinding wheel size 12” x 6” x 5”

• Regulating wheel 8” x 6” x 3.5”

• 7.5 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” – 1” (1-25mm) diameter
Grinding range (special work rest)	1” – 1.96” (25-50mm) diameter
Grinding wheel size	12” x 6” x 5”
Regulating wheel size	8” x 6” x 3.5”
Grinding wheel speed	1900 RPM
Regulating wheel speed	7 steps, 20 – 337 RPM for BN model Infinitely var. (10-300) for S model
Grinding wheel motor	7.5 HP (1800 RPM)
Regulating wheel motor	1 HP (1200 RPM) for BN model 2 HP for S model
Hydraulic pump motor	1 HP (1800 RPM)
Coolant pump motor	1/8 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	90” x 43” x 71”
Net weight (approx)	3520 lbs
Gross weight (approx)	3850 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