Grabber, Complete for Rainhart Soil Compactor

The Complete Grabber Assembly (662-1300) is a replacement component designed for the Rainhart Automatic Proctor Soil Compactor. This assembly is responsible for engaging, lifting, and releasing the compactor's hammer mechanism during laboratory soil compaction testing.

Designed to replace the existing grabber mechanism as a complete assembly, this component helps restore proper mechanical operation and reliable hammer release performance. Maintaining a properly functioning grabber assembly is essential for consistent compaction cycles, reducing equipment downtime, and supporting accurate soil moisture-density testing.

The replacement assembly provides a practical maintenance solution for geotechnical laboratories, construction materials testing facilities, and state DOT laboratories operating Rainhart soil compaction equipment.

Key Features

• Designed as a complete replacement grabber assembly for Rainhart soil compactors used in laboratory testing under ASTM D698, ASTM D1557, AASHTO T 99, and AASHTO T 180, when the complete equipment is properly configured.
• Provides a complete replacement mechanism for engaging, lifting, and releasing the compactor's hammer assembly during automated compaction cycles.
• Helps restore reliable hammer engagement and release when the existing grabber assembly becomes worn, damaged, or mechanically unreliable.
• Eliminates the need to replace individual grabber components when a complete assembly replacement is preferred.
• Supports consistent mechanical operation and repeatable compaction cycles when properly installed and adjusted.
• Helps minimize equipment downtime by allowing laboratories to service their existing automatic soil compactors rather than replace the complete machine.
• Suitable for geotechnical, construction materials, and state DOT laboratories performing routine soil moisture-density relationship testing.

Included Items

The product includes one Complete Soil Compactor Grabber Assembly, Part Number 662-1300, supplied as a replacement assembly for compatible Rainhart soil compactors. Additional installation hardware or accessories are not confirmed as included.

Lab Manager's Tip

Inspect the grabber assembly periodically for worn contact surfaces, damaged components, improper alignment, or inconsistent engagement with the compactor shaft. A worn or improperly adjusted grabber can interfere with the lifting and release of the hammer assembly, potentially affecting compaction consistency.

When replacing the grabber assembly, inspect the associated shaft weldment (662-1200A) for wear or scoring that could affect proper engagement. Replacing the grabber without addressing excessive shaft wear may result in continued operating problems.

For laboratories performing ASTM D698, ASTM D1557, AASHTO T 99, or AASHTO T 180 testing, verify the complete hammer mass, specified drop height, and proper hammer release operation following maintenance to ensure continued compliance with the applicable testing method.

• Rainhart_Soil_Compactor_662EP_Parts_Diagram.pdf