Ecotech Machinery Inc. - Item # MMB1420/500, Universal Cylindrical Grinder
Ecotech Machinery, Inc.
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Item # MMB1420/500 Universal Cylindrical Grinder




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Universal Cylindrical Grinder

The MMB1420 is equipped for both plunge grinding or traverse grinding with sparkout and retract. This machine is excellent for aircraft work or precision work where high tolerances must be held.

All of ECOTECH'S Universal Cylindrical Grinders have heavy aged cast iron construction, that have been precision machined and hand scraped. The universal grinders are specially designed for grinding O.D. and I.D. surfaces. With the universal workhead and wheelhead these machines are also ideally suited for grinding taper and faces as well. With a Hydro-Dynamic spindle on the wheelhead, and the Hydro-Static lubrication system on the table they will give you many years of trouble-free service.

Standard Equipment :
  • Wheel Dresser
  • Wrench Set
  • Operational & Maintenance Manual
  • Service Spare parts Kit
  • OD grinding Wheels (2) w/ Wheel Hubs (2)
  • Wheel Balancing Stand
  • Internal Grinding Wheels (4)
  • Drive Dogs
  • Grinding Wheel Arbors (4)
  • Flood Coolant System
  • Wheel Balancing Arbor
  • Open Type Steady Rest (1)
  • Closed Type Steady Rest (1)
  • 3 Jaw 6" dia. Chuck
  • Carbide Tipped Centers (4)
  • Complete U.S. Standard Electrics
  • Work Light (low voltage)



 Specifications  Optional Accessories  

Work Space

8" x 20"

Minimum ID

0.71 inches

Maximum ID

3.15 inches

Minimum OD

0.3 inches

Maximum OD

8 inches

Length OD

20 inches

Length ID

5 inches

Center Height

5 inches

Maximum Workload

112 lbs

Net Weight

4630 lbs

Dimensions (LxWxH)

79 x 56 x 63 inches

Wheelhead - Horse Power

3 - 4 HP

Wheelhead - Wheel Size (D Min.)

9 inches

Wheelhead - Wheel Size (D Max.)

12 inches

Wheelhead - Wheel Size (W)

1.5 inches

Wheelhead - Wheel Size (ID)

5 inches

Wheelhead - Wheel Speed

1100 rpm
2200 rpm

Wheelhead - Surface Speed

3460 fpm
6900 fpm

Wheelhead - Rapid Travel

30 ipm

Wheelhead - Handwheel/rev

0.04 inches

Wheelhead - Handwheel/div

0.00005 inches

Wheelhead - Maximum Travel RP

0.8 inches

Wheelhead - Maximum Travel HW

8 inches

Wheelhead - Spindle Taper

1:5 taper

Wheelhead - Oil Reservoir

7 gal

Wheelhead - Swivel Base

±180 °

Wheelhead - Spindle Bearing

3 shoe/hydrodynamic lubrication

I. D. Spindle - Horse power

3 - 4 HP

I. D. Spindle - Type

Swing around

I. D. Spindle - Spindle Speed

10000 rpm
21000 rpm

Worktable - Swivel

- 5 deg/+ 9 deg

Worktable - Feed Range

4 - 157 ipm

Worktable - Table Angle

Flat bed

Worktable - Maximum Travel

24 inches

Workhead - Horse Power

1/3 - 1/2 HP

Workhead - Taper

3 MT

Workhead - Spindle Speed

60 rpm
85 rpm
120 rpm
170 rpm
230 rpm
450 rpm

Workhead - Swivel

±90°

Workhead - Spindle Nose

Live or dead spindle/faceplate

Workhead - Oil Reservoir

1 gal. 32 ISO viscosity grade

Workhead - Dia (thru hole)

0.512

Tailstock - Taper

3 MT

Tailstock - Quill Travel

1.0 inches

Tailstock - Dressing

Solid mount

Hydraulic System - Horsepower

1 HP

Hydraulic System - Flow Rate

4.2 gpm

Hydraulic System - Pressure

113 - 142 psi

Hydraulic System - Reservoir

30 gal.32 ISO viscosity grade

Coolant System - Horse Power

0.88 HP

Coolant System - Flow

6.6 gpm

Coolant System - Pressure

43 psi

Coolant System - Reservoir

30 gal

Roundness between Centers

0.00004 inches

Roundness Chuck Mounted (OD)

0.00008 inches

Roundness Chuck Mounted (ID)

0.00008 inches

Cylindricity between Centers

0.0002/12 inches

Cylindricity Chuck Mounted (ID)

0.0001 inches

Repeatability

0.00006 inches

Voltage

220 V, 3 phase, 60 Hz

Total kVA

8 kVA

Current

45 A

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