Name: Mitutoyo 293-254-30 Digimatic Micrometer - INOSAKI
SKU: Mitutoyo-293-254-30
Price: 457.96 USD
Availability: InStock

Technical Overview

IP65-rated 200-225mm digital micrometer with 0.001mm resolution, ±3µm accuracy, constant-force ratchet stop, and SPC data output for industrial metrology.

Key Features

IP65-rated protection allows reliable operation in environments exposed to splashing coolants, cutting oil, and dust.
Integrated SPC data output port enables high-throughput logging of measurement data directly into spreadsheet programs.
Carbide-tipped, micro-lap finished measuring faces prevent wear and sustain micron-level accuracy over long-term use.
Constant-force ratchet stop mechanism (5–10 N) ensures consistent, highly repeatable measurements regardless of operator touch.
Absolute (ABS) linear encoder technology automatically retains origin settings, avoiding zero-setting on power-up.
Equipped with advanced functions: Origin-Set, Zero-Setting, Data Hold, Low Voltage Alarm, and Auto Power OFF (20 minutes).

Technical Specification Matrix

Parameter	Value
Measuring Range	200 - 225 mm
Resolution (Digital Step)	0.001 mm
Accuracy (Maximum Permissible Error J MPE)	±3 µm
Flatness	0.3 µm
Parallelism	4 µm
Measuring Force	5 - 10 N
Constant-Force Device	Ratchet Stop
Ingress Protection Rating	IP65 (IEC 60529)
Display Type	LCD (Character height 7.5 mm)
Measuring Spindle	With spindle lock, ø6.35 mm diameter, spindle pitch 0.5 mm
Scale	Thimble and sleeve satin chrome finish, ø18 mm
Battery Type	SR44 (1 pc., part number 938882)
Physical Weight (kg)	1.1
Dimensions L x W x H (cm)	34 x 12.6 x 1.8

Industrial Applications

1. CNC Machining Center In-Process Verification

Taking dimensional measurements of newly turned mid-sized metal shafts (200-225 mm) directly inside a CNC enclosure. The IP65 rating and oil-resistant housing allow the operator to use the micrometer safely in the presence of dripping coolant and metal chips.

Problem Solved

Eliminates tool cleaning downtime and prevents electrical failures from liquid entry, maintaining rapid, in-machine cycle-time verification.

CNC In-Process InspectionIP65 Coolant-ProofOil-Resistant MetrologyShaft Dimensional Tolerance

2. Automotive Crankshaft QC and Wear Inspection

Measuring the precise outer diameter of crankshaft journals and large gear shoulders during grind operations. Integrating the SPC data output port into a workshop receiver allows metrology data to be transferred instantly to quality tracking systems.

Problem Solved

Replaces slow manual logging with automated, error-free digital capture, boosting throughput and tracking quality drifts during mass production.

Automotive Journal MetrologySPC Data LoggingCrankshaft Quality ControlMeasurLink Integration

3. Heavy Machinery Bearing Shaft Metrology

Checking the tolerance of 200 mm bearing seat shafts before press-fitting. Handheld operators utilize the constant-force ratchet stop (5-10 N) and carbide-tipped faces to get identical results on hardened steel components.

Problem Solved

Eliminates operator-to-operator measurement variance caused by applying differing physical pressures on the micrometer thimble.

Bearing Seat MetrologyConstant-Force RepeatabilityCarbide-Tipped AnvilsHigh-Precision Outer Diameters