Balancing Machine for Crankshafts
300 EBTK | 310 EBTK

Design
Two-station machine with separate measuring and correction stations. Measuring station with coupling-free roller-drive or hook drive for asymmetrical crankshafts.

Correction station with positioning equipment and electro-mechanical drilling equipment.

Range of application
Measurement and correction of unbalance in machined passenger-vehicle and light commercial- vehicle crankshafts. Use in small and mid-volume series production or as a repair balancing machine.

Unbalance correction by drilling into the counterweights in one or more steps at a separate drill stand (correction station). Manual handling of the work-pieces between measuring and drilling stations.

Sequence of operations

• Load a crankshaft into the measuring station, manually or by lifting device
• Close the protective shroud. Automatic measuring run and display measured values.
• Open the protective shroud and move the crankshaft to the correction stand.
• Insert the crankshaft into positioning device and couple with angle-encoder for optional indexing aid or with locking-pin device
• Drill correction holes one after another corresponding to the display
• Return the crankshaft to the measuring station. Automatic check run and display of residual unbalance.
• Remove the crankshaft. If the crankshaft is still out of tolerance proceed with a second step.

Universal balancing unit with belt-drive for small volumes and repair, or for re-balancing applications. Due to the ease of setting up the support pedestals and the overslung belt-drive this solution is well suited to single-piece and small production volumes. Asymmetrical crankshafts can be balanced with bob weights.

Balancing unit for series production with an integrated coupling-free drive for symmetrical crankshafts. Drive supplied by two synchronous driven rollers with carbide coating. Non-contacting sensor for angle reference generation. For asymmetrical crankshafts (e.g. R5, V6 and V8 motors) the drive can be through an end-drive and hook-adapter. Free moments in the crankshaft are compensated by the drive so that no bob weights are required.

Correction station with positioning/snap-in locking device and electro-mechanical drill unit, with either single or two-spindle drill. Chip-extractor and indexing aid are options.