The 50150 mm Mitutoyo dial bore gauge delivers high repeatability and easy setup for precision bore inspection. When paired with the 7800 piece Mitutoyo dial bore product range, users gain a comprehensive solution for bore measurement across demanding production environments.
This configuration supports in process verification and auditing, combining robust mechanical design with Mitutoyo proven metrology performance. The following sections detail specifications, usage guidance, and practical considerations for integrating this gauge into daily inspection routines.
| Model | Measuring Range | Resolution | Dial Indicator Stroke |
|---|---|---|---|
| 501-50 mm Mitutoyo Dial Bore Gauge | 50 mm | 0.01 mm | 1.0 mm |
| Mitutoyo 7800 Piece Dial Bore Product Line | Various ranges | 0.01 mm | 1.0 mm typical |
| Repeatability | Within gauge range | ±0.002 mm | Stable over cycles |
| Back Rod Compatibility | Standard Mitutoyo series | — | Interchangeable |
Design and Measurement Principle
The 501-50 mm Mitutoyo dial bore gauge uses a precision sliding jaw mechanism to translate bore size into dial indicator displacement. This design allows users to measure internal diameters with consistent contact force and minimal parallax error. The 7800 piece Mitutoyo dial bore range provides multiple replaceable inserts to cover a wide spectrum of bore sizes without sacrificing accuracy.
Back rods and extension rods multiply the measuring span while maintaining sub micron repeatability. Because the gauge relies on mechanical contact, surface finish and proper cleaning procedures are critical to achieving reliable readings in production checks.
Setup and Calibration Workflow
Proper setup of the 501-50 mm gauge within the 7800 piece system begins with selecting the correct back rod, inserting it into the gauge body, and verifying smooth travel. A master standard or certified ring gauge should be used to establish zero, and the dial indicator set perpendicular to the bore axis to minimize cosine error. Regular calibration cycles, documented with deviation logs, help maintain traceability and reduce measurement uncertainty over time.
Technicians benefit from a simple sequence of cleaning, zeroing, and measuring, supported by Mitutoyo documentation and optional accessories such as handles and magnetic bases that stabilize the gauge during checks.
Application Scope and Environment Factors
Typical applications include verifying bore dimensions in hydraulic components, engine sleeves, bearings, and tubular assemblies where precise internal geometry is critical. The robust build of the 501-50 mm Mitutoyo dial bore gauge suits shop floor use, with protection against coolants when proper wiping and light lubrication routines are followed. Temperature control near standard reference conditions minimizes dimensional drift, especially when long back rods are deployed. In multi shift environments, periodic re zeroing and operator cross checks help sustain process capability across runs.
Technical Specifications and Accessories
Understanding the technical parameters of the 501-50 mm unit within the broader 7800 piece Mitutoyo dial bore catalog supports correct gauge selection and prevents over stressing the mechanism. From a maintenance perspective, keeping contact points clean and monitoring wear on the active measuring contacts ensures consistent contact force and reading stability. Optional accessories such as magnetic bases, extension rods, and carrying cases simplify setup and transport between inspection stations.
| Parameter | Value | Notes |
|---|---|---|
| Measuring Range | 50 mm | Upper limit of the 501 family |
| Indication Graduation | 0.01 mm | Direct read from revolution scale |
| Accuracy Limit | {" "}±0.004 mm | Under reference conditions |
| Contact Material | {" "}Hard alloy or carbide tips | Reduces wear on bore surfaces |
| Back Rod Interface | {" "}Mitutoyo standard series | Interchangeable across dial bore gauges |
Practical Tips and Recommendations
- Always verify zero position on a certified master standard before each measuring session.
- Use the correct back rod length to minimize sag and cosine error when measuring long bores.
- Keep contact tips clean and lightly lubricated to reduce friction and protect the dial movement.
- Document environmental conditions and any adjustments to support traceability and troubleshooting.
- Leverage the 7800 piece Mitutoyo dial bore family to cover multiple bore sizes while maintaining a common handling routine.
FAQ
Reader questions
How often should I calibrate the 501-50 mm Mitutoyo dial bore gauge when used in a high volume shop floor?
Schedule calibration at least once per month, or sooner if indicators show drift or after any impact or drop; more frequent checks are recommended when measuring critical components or in uncontrolled temperature environments.
Can I use this gauge with coolant, and what maintenance steps are required to protect the dial indicator?
Yes, brief exposure to coolant is acceptable, but you should wipe the gauge dry after use, lightly oil moving parts, and inspect the contact tips for chips or scoring to avoid false readings and premature wear.
What should I do if the dial indicator needle does not return to zero after zeroing on a master ring gauge?
Check for dirt between the contact points, verify that the back rod is fully seated, and ensure the gauge is not over traveled; if the needle remains off zero, perform a fresh zero adjustment and, if needed, consult calibration records for possible internal wear.
Are replacement indicators or back rods available separately for the 501-50 mm Mitutoyo dial bore gauge?
Mitutoyo provides genuine replacement indicators, back rods, and extension rods through authorized distributors, ensuring dimensional compatibility and preserving the original accuracy of the system.