LARGE DIAMETER BORING TOOLS
SAFETY INSTRUCTIONS The max. speed allowed for series 318 boring tools is in relation to the boring diameter and the extension slide used. All extension slides are marked with max speed allowed [n max].
Bridge Aluminum Catalog Number Reference Number
Max Speed (RPM)
ØD
BR620-830 BR830-1110 BR1110-1530 BR1530-2020 BR2020-2510 BR2510-3000
24.37-32.72 32.64-43.74 43.66-60.28 60.20-79.57 79.49-98.86 98.78-118.15
600 450 350 250 190 150
10.318.421 10.318.422 10.318.423 10.318.424 10.318.425 10.318.425
APPLICATION NOTES ROUGHING Ø24.37"-43.70"
Up to Ø32.68 the bridge tool can be connected to the machine spindle over a tool shank, but only on a machine with good spindle taper, good spindle bearings and with the normal retention force available. For the range between Ø32.68-43.70, roughing is possible with the bridge bolted on to the machine spindle. If vibration occurs use just one cutting edge. Ø>43.70" Roughing is not recommended FINISHING Ø24.37"-43.70" Finishing is possible with the bridge tool connected to the machine spindle over a tool shank, providing that the machine spindle is in good condition. Ø>43.70" The bridge tool must be bolted on to the machine spindle, either directly or if required over a special flange.
CONNECTING THE BRIDGE TO THE MACHINE SPINDLE The bridge tool can be connected to the machine spindle over a tool shank (Fig. 1) or it can be bolted on to the spindle face (Fig. 2). A bolted connection is recommended for bore sizes Ø43.70 and larger.
Fig. 1
Fig. 2
525
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