Mitutoyo-SERIES 148 – Fine Spindle Feed of 0.1mm/rev-Micrometer Heads

• Highly accurate 0.1mm pitch thread is only one-fifth of that used for a standard-pitch head (0.5mm).
• External dimensions are compatible with standard 0.5mm pitch heads.

DIMENSIONS

SPECIFICATIONS
Metric

Order No.	Range	Graduation	Accuracy	Stem dia.	Stem	Spindle end	Spindle pitch	Special features
148-142	0 – 6.5mm	0.002mm	±2µm	9.5mm	Plain	Spherical (SR4)	0.1mm	—
148-143					w/ clamp nut
148-342					Plain			Thicker & shorter thimble
148-343					w/ clamp nut
148-242			±5µm	6mm	Plain	Spherical (SR3)		Small thimble diameter
148-243					w/ clamp nut
148-244	0 – 5mm	0.004mm		3.5mm	Plain	Spherical (SR1.5)
148-245					w/ clamp nut

Spindle pitch

Applications

• Semiconductor-wafer positioning machinery and optical component alignment units, etc.
• Precision X-Y table positioning

• Precision adjustment of mirror in holder

Comparison of mounting dimensions between a fine-pitch head and a standard-pitch head at the mid-range  travel position.

While the fine-pitch micrometer head has a measuring range of 6.5mm, the standard head has a larger range of 13mm.
When replacing a standard head, the fine-pitch type can use the common range in the middle of the spindle travel.
The standard and compact types of fine-pitch head are otherwise completely interchangeable.