Mitutoyo 293-353-30 Coolant Proof Digimatic Micrometer

USD 493.78

IP65-rated 7-8″ (177.8-203.2mm) digital outside micrometer with ±0.00015″ accuracy, 0.0001″ resolution, ratchet stop, carbide faces, and SPC data output.

SKU Mitutoyo-293-353-30 Category
Top Brands > Mitutoyo > Mitutoyo Digital Micrometers

Mitutoyo 293-353-30 Coolant Proof Digimatic Micrometer

Model Identifier 293-353-30
Official Part Number 293-353-30
GTIN Standard 4946368695532

Technical Overview

IP65-rated 7-8" (177.8-203.2mm) digital outside micrometer with ±0.00015" accuracy, 0.0001" resolution, ratchet stop, carbide faces, and SPC data output.

Key Features

  • Wide measuring range of 7.0 to 8.0 inches (177.8 to 203.2 mm) for large components
  • High-contrast digital LCD with 7.5 mm character height for clear readability
  • IP65 rated protection makes the tool dustproof and water-jet resistant near machinery coolants
  • Ratchet stop constant-force device guarantees consistent spindle pressure and measurement repeatability
  • Highly stable frame with integrated heat shield to minimize body heat transfer
  • Carbide-tipped, micro-lap finished measuring faces prevent wear over extended periods
  • SPC data output port enables high-efficiency statistical process control logging
  • Extended battery life of approximately 1.2 years with a single SR44 silver-oxide cell
  • Multi-function capability: Origin-set, Zero-setting (ABS/INC), Data Hold, and Auto Power On/Off
  • Low voltage and counting value composition error alarms to ensure measurement integrity

IP65 Coolant-Proof Protection and Integrated SPC Data Output

Technical Specification Matrix

ParameterValue
Measuring Range7 - 8 inches (177.8 - 203.2 mm)
Resolution0.0001" (0.001 mm)
Accuracy±0.00015" (±3 µm)
Flatness0.000012" (0.3 µm)
Parallelism0.00016" (4 µm)
IP Protection ClassIP65 (IEC 60529)
Measuring Force5 to 10 N
Spindle Diameter6.35 mm
Spindle Pitch0.5 mm
Battery TypeSR44 (Silver Oxide, 1 pc.)
Battery LifeApprox. 1.2 years under normal use
Data OutputYes (Digimatic SPC)
Measuring FacesCarbide-tipped, micro-lap finish
Constant-Force DeviceRatchet Stop
Physical Weight (kg)0.97
Dimensions L x W x H (cm)32.5 x 2.5 x 13.5

Industrial Applications

1. CNC Machining Shop Floor Quality Inspection

Used directly on CNC turning and milling shop floors to verify outer diameters of large machined shafts, flanges, and aerospace/automotive components. The IP65 rating enables measurements to be taken directly in environments heavy with cutting fluids and oil splashing.

Problem Solved

Eliminates time spent waiting for parts to dry completely and prevents internal damage to measuring electronics caused by the ingress of abrasive metallic grit and fluids.

CNC MachiningOuter Diameter MeasurementCoolant-ResistantIP65 ProtectionCarbide-Tipped

2. Automotive Engine Component and Crankshaft Quality Control

Applied in engine-rebuilding and manufacturing facilities to inspect crankshaft journal diameters, cylinder liners, and large piston components. The integrated heat shield on the micrometer frame preserves high precision by mitigating thermal expansion caused by the operator's body heat.

Problem Solved

Avoids thermal expansion errors during intensive, continuous handheld inspection, maintaining a strict tolerance control down to ±0.00015".

Crankshaft InspectionEngine RebuildingThermal Expansion ShieldRatchet StopConstant-Force Measurement

3. High-Volume Aerospace Fastener & Structural Shaft Auditing

Technicians use this micrometer to measure structural shafts and large-scale fastners in aerospace assemblies. The integration of Digimatic SPC data output allows direct cable transmission of dimensions to a computer terminal running quality assurance databases.

Problem Solved

Mitigates manual transcription errors from operators writing down measurements and provides a digitally recorded, traceable history required for rigorous aerospace compliance audits.

Aerospace ManufacturingSPC Data OutputTraceabilityDigital ResolutionStatistical Process Control
Select your currency