Wacker Neuson 10388 Woodruff Key

The Wacker Neuson 10388 Woodruff Key is a genuine OEM component designed for the BS50-2, BS60-2, BS70-2, and BS70-2i series vibratory rammers, as well as a wide range of BH-series gasoline breakers. As a direct OEM replacement sourced through authorized Wacker Neuson supply channels, part 10388 meets the same tolerances and material specifications as the original. This key seats precisely into its mating shaft and hub slot, locking the two components in proper rotational alignment. Broad fitment coverage across the BS500, BS600, BS700, BS52Y, BS65-V, and BS65Y rammer families — plus BH 22, BH 23, BH 24, BH 55, and BH 65 breaker series — makes 10388 a practical stock item for service fleets and repair shops.

Key Features

• Genuine OEM Material Integrity — Manufactured to Wacker Neuson's original hardness and shear-strength specification for this shaft application, so the key transmits torque correctly without premature deformation.
• Direct Slot-to-Slot Replacement — Matches the exact semi-circular profile of the original Woodruff key seat; drops into the crankshaft or drive-shaft keyway without machining or filing.
• Broad Rammer Family Coverage — Fits BS50-2, BS50-2i, BS60-2, BS60-2i, BS70-2, BS70-2i, BS65-V, BS52Y, BS65Y, BS500, BS600, and BS700 series vibratory rammers across standard, oil-injected, variable-speed, and high-altitude variants.
• Breaker Series Compatibility — Also fits BH 22, BH 23, BH 24, BH 24 Low Vib, BH 40, BH 55, BH 55rw, and BH 65 gasoline breaker models, reducing the number of individual part SKUs a shop needs to carry.
• Shaft Alignment at Every Stroke — A correctly fitted Woodruff key keeps the eccentric weight or drive component locked in phase with the crankshaft; a worn or sheared key causes vibration loss, erratic compaction output, or complete drive failure.

A Woodruff key is a small, semi-circular locking piece that fits into matching curved slots cut into a shaft and the hub of a gear, pulley, or eccentric weight. Its job is to prevent the hub from rotating independently of the shaft, transmitting drive torque reliably between the two. In a vibratory rammer, this connection is critical — the eccentric weight must stay precisely timed to the crankshaft to produce the correct compaction stroke. When a Woodruff key shears or wears, the hub slips on the shaft, causing a loss of impact energy, unusual vibration, or a complete failure to generate the compaction force the machine is rated for. Replacing a damaged key promptly with the correct OEM part restores proper shaft-to-hub engagement and prevents secondary damage to the keyway itself.

Part Details

Compatibility & Fitment

Verify Before You Order

Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.

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