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HH Roberts Machinery Ltd logo
Questions ?
Call us at 905-624-5536
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H.H. Roberts Machinery Limited
1324 Matheson Blvd E., Mississauga, Ontario, Canada. L4W-2Z7, Fax 905-624-9065
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Topwell 3-RG and 3-GL
Freatures
  • RG model has a back geared head delivering great torque at low rpm.  15 to 750 rpm in low and 75 to 6,000 in high.
  • GL model is direct drive without back gear and is a good simpler head for light alloys and plastic. Speeds are 75 to 6,000 rpm
  • the spindle motor is 3 Hp and can deliver 4-1/2 Hp (30 minutes).  It is a true inverter motor balanced to 7,200 rpm with a integral constant speed blower for cooling.
  • the drive is like a machining center with no vari-discs or mechanical brakes to rob power.  Amost all the power is delivered to the cutter.
  • 12" x 50" table with hardened top  ( 10" x 50" and 10" or 12" x 45" optional )
  • available for 208V, 230V, 460V 3 phase and optionally 220/1/60
  • 32" x 16" travels with the power feed. 35-1/2" without power feed
  • hardened and ground X and Y axes with Turcite counterslide on saddle
  • hardened and ground vertical slideways
  • two peice leadscrew nuts for excellent backlash reduction
  • power feed on table - standard
  • central lubrication system
  • the vector drive head is an in house development that is enjoying success as a replacement head for older Bridgeport's and Bridgeport clones. Click here for details.
Options
  • # 30 or # 40 spindle to accept Cat-V, BT or NMTBA tooling.
    The 40 taper spindle has 3 heavy lower bearings.
  • Acu-Rite , Heidenhain or Fagor readouts
  • coolant system
  • chip pan
  • side splash guards
  • riser blocks
  • cross slde feed
  • knee lift
  • ballscrws on X and Y
  • Elesa delux round handwheels with folding grips
  • air power draw bar
  • E-stop button
  • Halogen worklight
  • timed automatic central lubrication system
  • built in transformer for 120 volt accessories like DRO, power feed and worklight.

topwell machinery logo
Topwell 3-GL knee type milling machine with Anilam digital readout
GL model shown
Shown with optional power draw bar


spindle bearings on # 40 taper spindle

The top spindle is Towpell's special # 40 taper. There are 3 sets of high precision P4 bearings
at the bottom and a single bearing at the top. This gives extra rigidity and vibration resistance.
We normally set these up to use Cat-V-40 tools.
For comparison, below it is a standard spindle in a Bridgeport type R-8 spindle at the bottom with
only 2 high precision bearings at the bottom.   

Specifications 3-GL 3-RG
Table size: standard 1070 x 254mm, 1270 x 254   or  1270 x 305229mm
10" x 50", 10" x 54"   or  12" x 50"
Table sizes: optional 10" x 54", 10" x 50", 10" x 42"
Table travel ( standard ) 914mm
36"
travel is reduced with a power feed attached
Cross travel 400 mm
15.75 "
Knee travel 406 mm
16 "
Quill diameter 85.725 mm
3 3/8"
Quill travel 127 mm
5"
Ram travel 508 mm
20 "
Spindle motor 3 HP continuous, 4.5 Hp 30 minutes
Spindle taper R-8
optionally #40 (Cat-V-40 ) or # 30 )
see picture above
Quill power feeds 0.0381, 0.0762, 0.152 mm / Rev.
Spindle speeds 50 - 4,000 or
75 - 6,000
Lo 15 - 750
Hi 75 - 6,000
Weight 1250 kgs
2,750 lbs

Available with
Acu-rite logo
Acu-rite millpwr logo
CNC
We offer the Acu-Rite Millpwr CNC control. This has to be the easiest CNC to run, program and make money with.
Details:

Click here to download our knee mill catalogue.