Starrett S668DZ Shaft Alignment Clamp Set with 81-141J Indicators & Extension Plates

The Starrett S668DZ Shaft Alignment Clamp Set is a professional-grade dual-indicator system engineered for fast, precise alignment of motors, pumps, compressors, and other rotating equipment. Capable of addressing both radial and angular misalignment, this complete set can be configured and ready for measurement in minutes, making it an efficient solution for industrial maintenance and installation applications.

The two chain clamps feature a lightweight black anodized aluminum frame paired with a heavy-duty roller chain capable of securing to shafts up to 7-1/2 inches in diameter. Excess chain can be neatly secured to the side of the clamp body. A V-shaped jaw design ensures a firm, stable grip during measurement. A second clamp can be mounted opposite the first to serve as a vertical target for face alignment procedures.

Key Features:

• Lightweight clamp body constructed of black anodized aluminum for durability and corrosion resistance
• Heavy-duty roller chain accommodates shafts up to 7-1/2" in diameter
• Rigid 3/8" diameter stainless steel indicator posts in three lengths: 5", 7-7/16", and 9"
• Extension plates provide additional radial clearance when required
• Addresses both radial and angular misalignment problems
• Quick setup — ready to use within minutes
• Includes two precision Starrett 81-141J dial indicators with lug-on-center backs
• Stainless steel snugs secure posts together and hold gauges in measuring position
• Supplied in a fitted protective carrying case for organization and storage

What's Included (2 of each):

• Chain Clamp (black anodized aluminum frame)
• Starrett 81-141J / 657Y Dial Indicator
• PT18724 Snug
• Extension Plate
• Posts: 5", 7-7/16", and 9" lengths
• Fitted Carrying Case

The S668DZ is a complete, ready-to-use shaft alignment solution trusted by maintenance professionals. The included Starrett 81-141J indicators are renowned for their precision and reliability, ensuring accurate readings every time. All components store securely in the included fitted case, keeping the set organized and protected between uses.