Professional crankshaft deflection gauge designed for checking web distortion and bearing alignment on marine diesel engines,
compressor shafts, and center crankshafts — without dismantling the engine.
Features a high-precision dial indicator graduated in 0.01 mm increments (0-50-0 reading) with multiple extension rods
and a premium wooden carrying case. Essential for marine engine maintenance, shaft alignment inspection, and engine frame strain measurement.
Product Overview
This inside gauge allows marine engineers to accurately measure crankshaft web deflection and verify bearing alignments
while the engine remains fully assembled. Suitable for use on diesel engine crankshafts, compressor center crankshafts,
and as a strain gauge on engine frames during operation. The dial indicator reads in 0.01 mm increments with a 0-50-0 scale;
one complete revolution equals 1 mm, ensuring precise, repeatable measurements in demanding marine engine room environments.
Key Features
- High-Precision Dial Indicator — 0.01 mm graduation with 0-50-0 dial reading; 1 mm per revolution for exact deflection measurement.
- Non-Intrusive Inspection — Measure crankshaft distortion and bearing alignment without engine disassembly, reducing downtime.
- Multiple Extension Rods — Interchangeable rods provide versatile measuring ranges across different engine sizes and crank web spans.
- Premium Wooden Carrying Case — Durable hardwood case with protective foam insert for safe storage and transport aboard vessels.
- Marine-Grade Durability — Built to withstand harsh engine room conditions including high temperatures, humidity, and vibration.
- Dual-Purpose Application — Functions as both a crankshaft deflection gauge and an engine frame strain gauge while machinery is running.
Applications
Diesel Engine Crankshaft Deflection
Periodic measurement of web distortion on main and auxiliary diesel engines to detect bearing wear and misalignment early.
Center Crankshaft Alignment
Verify alignment of center crankshafts on large marine engines and industrial compressors without removing components.
Compressor Shaft Inspection
Check deflection and bearing condition on marine air compressor crankshafts during scheduled maintenance.
Bearing Alignment Verification
Confirm main bearing and crankpin bearing alignment to prevent excessive vibration and premature bearing failure.
Engine Frame Strain Measurement
Apply as a strain gauge on engine frames and bedplates while the engine is in operation to monitor structural stress.
Shipyard & Overhaul Services
Standard tool for shipyards, classification society inspections, and engine overhaul contractors worldwide.
Technical Specifications
| Parameter | Model 60-150 | Model 75-300 | Model 100-500 |
|---|---|---|---|
| Measuring Range | 60 – 150 mm | 75 – 300 mm | 100 – 500 mm |
| Graduation | 0.01 mm | ||
| Dial Reading | 0 – 50 – 0 | ||
| One Turn Equals | 1 mm | ||
| Extension Rods | Included | Included | 6 rods + 1 extension |
| Carrying Case | Premium Wooden Case with Foam Insert | ||
| Application Environment | Marine Engine Rooms, Shipyards, Industrial Plants | ||
Standard Package Contents
- 1 × Dial Indicator (0.01 mm graduation, 0-50-0 reading)
- Extension Rods (quantity varies by model: standard or 6 rods + 1 extension)
- 1 × Premium Wooden Carrying Case with Protective Foam Insert
All models feature durable construction specifically engineered for harsh marine engine room environments.
Why Choose ALL-K MARINE Crankshaft Deflection Gauges?
ALL-K MARINE delivers precision marine engine measurement tools trusted by shipowners, chief engineers, and classification societies.
Our crankshaft deflection gauge set combines accurate 0.01 mm resolution with rugged marine-grade construction,
enabling reliable bearing alignment checks and shaft deflection surveys without costly engine teardowns.
Whether for routine onboard maintenance or major overhauls, this tool ensures your propulsion and auxiliary machinery
operate within manufacturer tolerances — protecting your vessel’s performance and safety at sea.
