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| HH Roberts / Topwell TW-31-Q Bed type CNC Milling Machine with 6,000 RPM tilting quill style head  | 
  
 All these models are available with Fanuc, Fagor and Mitsubishi CNC  | 
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| 38" wide saddle for better table support, accuracy and resistanace to chatter.  31" x 20" x 20" travels plus 5" quill stroke. The quill stroke can also be CNC controlled for machining with the head tilted. Cat-V-40 or BT-40 tooling 7 1/2 to 15 Hp vector drive spindle speeds to 6000 rpm with a choice of back geared or direct drive heads. 600 to 1000 IPM rapid traverse (according to control model and drive selection.)  | 
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| Detailed specs on the complete quill head series | Available with base mounted or overhead CNC console. | 
TW-31-Q  | 
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| X axis travel | 31" | 
| Y axis travel | 20" | 
| Z axis travel | 20" | 
| Quill travel | 5" | 
| Quill power feeds | 3 | 
| Table size | 42" x 13" | 
| Spindle C/L to column | 22" optionally 25" | 
| Spindle nose to table | 22" | 
| Saddle width | 38" | 
| Tooling | Cat-V40, BT-40 or NMTBA-40 | 
| Tool clamping standard | pneumatic power draw bar | 
| Spindle bearing ID | 50 mm | 
| Spindle power * |  5 Hp continuos, 7 1/2 30 minute optionally 12 or 15 Hp.  | 
  
| Spindle speeds standard | direct drive 100 to 6,000 or 75 4000 | 
| Spindle speeds optional | Back geared, Low 15 to 750 --- High 100 6,000 rpm > | 
| Rapid traverse | 600-1000 IPM | 
| Axis motor torque - cont. | stardard DC 3.1 NM optional 4.5 or Yaskawa AC 5.3 | 
| Main power supply | 230/3/60 optionally 220/1/60 or 460/3/60 | 
| Aprroximate weight (lbs) | 4,650 | 
| Floor space L-R x F-B | 112" x 102" | 
| Max. height in operation | 101" |