Mitutoyo 571-251-20 IP67 Digimatic Depth Gauge

USD 422.39

IP67 coolant-proof digital depth gage with 0-150mm range, 0.01mm resolution, +/-0.02mm accuracy, absolute linear encoder, and SPC data output terminal.

SKU Mitutoyo-571-251-20 Category
Top Brands > Mitutoyo > Mitutoyo Dial Depth Gauges

Mitutoyo 571-251-20 IP67 Digimatic Depth Gauge

Model Identifier 571-251-20
Official Part Number 571-251-20
GTIN Standard 4946368727141

Technical Overview

IP67 coolant-proof digital depth gage with 0-150mm range, 0.01mm resolution, +/-0.02mm accuracy, absolute linear encoder, and SPC data output terminal.

Key Features

  • ABSOLUTE electrostatic capacitance linear encoder retains origin point once set for the life of the battery
  • IP67 protection level enables use in machining environments with splashing coolant, water, dust, and lubricants
  • Hardened and micro-lapped stainless steel base and measuring faces provide superior wear resistance and flatness
  • Equipped with SPC Digimatic data output for real-time quality control integration
  • Large, high-contrast LCD screen with 9 mm character height for error-free readability
  • Mounting holes included on the base allow for attachment of optional wider extension bases up to 450 mm
  • Built-in function alarms for low battery voltage and counting value composition errors

Powered by a single 1.5V SR44 silver-oxide button battery with approximately 20,000 hours (5 years) of service life under normal conditions

Technical Specification Matrix

ParameterValue
Measuring Range0 - 150 mm
Resolution0.01 mm
Maximum Permissible Error (EMPE)±0.02 mm
Repeatability0.01 mm
Ingress Protection RatingIP67
Base Dimensions (W x T)100 mm x 6 mm
Overall Beam Length (L)239 mm
Slider Width (W)59.2 mm
Main Beam Thickness3.5 mm
Main Beam Width16 mm
Scale TypeABSOLUTE electromagnetic inductive linear encoder
Data Output TerminalYes (SPC Digimatic)
Main MaterialHardened Stainless Steel
Maximum Response SpeedUnlimited
Physical Weight (kg)0.2
Dimensions L x W x H (cm)23.9 x 10 x 5.92

Industrial Applications

1. Precision Machining Quality Control

Checking the depth of milled slots, blind holes, or machined pockets directly inside CNC machining centers while parts are still fixture-clamped.

Problem Solved

Conventional digital gages short-circuit or lose tracking when exposed to cutting fluids, water, and metallic dust. The IP67 coolant-proof rating allows reliable, direct measurements in environments exposed to heavy fluid splashing without stopping to dry the tool.

CNC MachiningCoolant-ProofIP67 ProtectionBlind Hole MeasurementABSOLUTE Linear Encoder

2. Automotive Powertrain Quality Inspections

Measuring the depth of cylinder bores, valve guide recesses, and gasket groove depths on heavy-duty engine blocks and cylinder heads.

Problem Solved

Assembly line verification demands rapid, highly accurate checks (±0.02 mm) with integrated data logging. The built-in SPC Digimatic port outputs data directly to automated quality control stations, preventing manual keying errors and maintaining high throughput.

Powertrain AssemblySPC Data OutputDigimatic InterfaceRepeatable AccuracyHardened Stainless Steel Base

3. Aerospace Component Profile Audits

In-process depth auditing of weight-reduction pockets and fastener recesses on structural titanium or aircraft-grade aluminum alloy panels.

Problem Solved

Ensuring critical depth tolerances stay within strict margins of ±0.02 mm. Since the ABSOLUTE system retains the origin point permanently, technicians can immediately execute quick measurements without manual calibration step errors, and micro-lapped measuring surfaces prevent workpiece scratching.

Aerospace QCTolerancingMicro-Lapped Measuring FacesOrigin-SetHigh-Precision Depth Gage
Select your currency