Description
The Mitutoyo 137-204 is a high-precision Tubular Inside Micrometer Set designed for the accurate measurement of internal diameters over an extended range. This professional-grade metrology kit combines the 137-202 and 137-205 micrometer heads with a series of interchangeable extension rods to provide a versatile solution for large-bore inspections. Engineered for industrial environments, the tubular construction ensures high rigidity while maintaining a lightweight profile for ease of handling.
Technical Specifications:
Manufacturer: Mitutoyo
Model Series: 137
Set Model Number: 137-204
Measurement Type: Internal / Tubular
Measuring Range: 50 mm to 1000 mm
Graduation: 0.01 mm
Accuracy: ±(3 + L/25) µm (L = maximum measuring length in mm)
Micrometer Head Stroke: 13 mm (137-202) and 25 mm (137-205)
Anvil Material: Hardened Steel
Measuring Faces: Carbide-tipped options available (Standard set features hardened tool steel)
Extension Rods Included: 13 mm, 25 mm, 50 mm (2 pcs), 100 mm, 200 mm, 300 mm
Main Unit 1: 137-202 (50-75 mm range)
Main Unit 2: 137-205 (200-225 mm range)
Weight: 1.25 kg (Total set weight including case)
Standard Accessories: Fitted wooden or plastic storage case, adjustment wrenches, setting standards
Engineering and Design Features:
Original Engineering: The 137 series utilizes a hollow-pipe structure that minimizes thermal expansion and mechanical deflection during manual measurement.
Technical Compatibility: Extension rods are precision-ground and feature clear markings for rapid assembly and verification of total length.
Durability: The satin-chrome finish on the micrometer head prevents glare and provides superior resistance to corrosion and wear in workshop conditions.
Locking Mechanism: Integrated locking clamp allows for the secure preservation of measurements for transfer to secondary gauges or documentation.
Industrial Application:
This micrometer set is critical for heavy machinery manufacturing and aerospace maintenance. It solves the challenge of verifying the concentricity and diameter of large engine cylinders, turbine housings, and hydraulic cylinders where standard calipers lack the necessary reach or precision. The modular design ensures minimal downtime by allowing technicians to quickly reconfigure the tool for varying bore sizes on a single production line.
Logistics and Quality Assurance:
Lead Time: Standard stock item; typically ships within 3-5 business days.
Certification: Supplied with a Certificate of Inspection; ISO/IEC 17025 calibration certificates available upon request.
Key Attributes
Accuracy: ±0.003mm
Material: Stainless Steel
Resolution: 0.01 mm
Place of origin: Japan
Model number: 137-204
Brand name: Mitutoyo
Customized support: No
Warranty: 1 years
Range: 50-1000mm
Accuracy: 3um
Head Stroke: 13mm
Extension Rods: 8 -13,25,2-50,100,2-200,300mm
Packaging and Delivery
Selling Units: Single item
Single package size: 32X22X11 cm
Single gross weight: 2.000 kg
Reviews
There are no reviews yet.