JHC-12BN Centerless Grinder


Machine may be shown with optional accessories


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Machine may be shown with optional accessories.

FEATURES:

  • Machine main chassis is made of high-grade cast iron FC-30 melted by advanced induction furnace then cast by resin cores. It is heat treated by normalizing procedure prior to machining to ensure greater stability and rigidity
  • Wheel spindle is made of SNC-21H, Ni-Cr-Mo alloy steel and case-hardened, carbonized, and then sub-zero degree treated by computerized controlled installation. Surface hardness is more than HCR 62° for a dept of over 1.5mm. Hardness at hub is about HRC 30°, resistance to wear and not easily deformed.
  • Swivel and tilt regulating wheel to accommodate workpiece requirements
  • Lubrication system for hydraulic dressing and enforced spindle lubrication. The oil tank is located outside of machine for easy maintenance. Two layers of filter plus pressure regulator to ensure the cleanness of lubrication oil and oil film thickness consistency to extend wheel spindle life span and accuracy
  • Wheel dressing device is made of FC-30 cast iron and precision ground. It is driven by hydraulic system with stepless speed regulator for easy and steady dressing operation.



STANDARD ACCESSORIES:

  • Grinding wheel and grinding wheel flange
  • Regulating wheel and regulating wheel flange
  • Thrufeed standard workrest and blade
  • Infeed standard workrest and blade
  • Tool box
  • Work light
  • Diamond tool
  • Thrufeed safety device
  • Flange extractor 
  • Leveling screws and plates
  • Thrufeed process gauge
  • Coolant tank with pump
  • Hydraulic tank with pump
MACHINE
Model: JHC-12BN
Type: Centerless Grinder
CAPACITY
Standard work rest (diameter): 0.039" ~ 0.98" (1 ~ 25 mm)
Special work rest (diameter): 0.98" ~ 1.57" (25 ~ 40 mm)
WHEEL
Grinding wheel size (dia. x width x hole): 12" x 5.9" x 4.7" (305 x 150 x 120 mm)
Regulating wheel size (dia. x width x hole): 8" x 5.9" x 3.5" (205 x 150 x 90 mm)
Grinding wheel speed: 1,900 rpm
Regulating wheel speed: 20 ~ 337 rpm ( 7 steps)
Regulating wheel tilt angle: +5° ~ -3°
Regulating wheel swivel angle: ±5°
FEED
Regulating wheel feed on handwheel per graduation: 0.02 mm
Regulating wheel feed on handwheel per revolution: 4 mm
Regulating micro feed on handwheel per graduation: N/A
Regulating micro feed on handwheel per revolution: N/A
Table feed on handwheel per graduation: 0.05 mm
Table feed on handwheel per revolution: 7 mm
Table micro feed on handwheel per graduation: 0.001 mm
Table micro feed on handwheel per revolution: 0.2 mm
Dressing handwheel per graduation: 0.01 mm
Dressing handwheel per revolution: 1.25 mm
POWER
Grinding wheel motor: 7.5 HP
Regulating wheel motor: 1 HP x 6P
Hydraulic pump motor: 1 HP
Coolant pump motor: 1/8 HP
WEIGHT & DIMENSIONS
Floor space (approx.) (LxWxH): 68.9" x 53.15" x 55.12"
Net weight: 3,525 lb.
Gross weight: 3,860 lb.

 

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Centerless Grinders

 

 

Accessories

STANDARD ACCESSORIES:

  • Grinding wheel and grinding wheel flange
  • Regulating wheel and regulating wheel flange
  • Thrufeed standard workrest and blade
  • Infeed standard workrest and blade
  • Tool box
  • Work light
  • Diamond tool
  • Thrufeed safety device
  • Flange extractor 
  • Leveling screws and plates
  • Thrufeed process gauge
  • Coolant tank with pump
  • Hydraulic tank with pump

Specifications

MACHINE
Model: JHC-12BN
Type: Centerless Grinder
CAPACITY
Standard work rest (diameter): 0.039" ~ 0.98" (1 ~ 25 mm)
Special work rest (diameter): 0.98" ~ 1.57" (25 ~ 40 mm)
WHEEL
Grinding wheel size (dia. x width x hole): 12" x 5.9" x 4.7" (305 x 150 x 120 mm)
Regulating wheel size (dia. x width x hole): 8" x 5.9" x 3.5" (205 x 150 x 90 mm)
Grinding wheel speed: 1,900 rpm
Regulating wheel speed: 20 ~ 337 rpm ( 7 steps)
Regulating wheel tilt angle: +5° ~ -3°
Regulating wheel swivel angle: ±5°
FEED
Regulating wheel feed on handwheel per graduation: 0.02 mm
Regulating wheel feed on handwheel per revolution: 4 mm
Regulating micro feed on handwheel per graduation: N/A
Regulating micro feed on handwheel per revolution: N/A
Table feed on handwheel per graduation: 0.05 mm
Table feed on handwheel per revolution: 7 mm
Table micro feed on handwheel per graduation: 0.001 mm
Table micro feed on handwheel per revolution: 0.2 mm
Dressing handwheel per graduation: 0.01 mm
Dressing handwheel per revolution: 1.25 mm
POWER
Grinding wheel motor: 7.5 HP
Regulating wheel motor: 1 HP x 6P
Hydraulic pump motor: 1 HP
Coolant pump motor: 1/8 HP
WEIGHT & DIMENSIONS
Floor space (approx.) (LxWxH): 68.9" x 53.15" x 55.12"
Net weight: 3,525 lb.
Gross weight: 3,860 lb.

* Design and specifications are subject to change without notice.