Micrometers
Micrometers according to DIN 863
Micrometers are standardised Part 1–4 according to DIN 863. Part 1: External micrometers, normal model; Part 2: Micrometer heads, depth micrometers; Part 3: External micrometers, special models; Part 4: Internal micrometers.
Error limits for external micrometers according to DIN 863 Part 1:
Values A = Deviation range of the indication; Values B = Parallelism of the measuring surfaces; Values C = Bending up of the frame.
The values specified in the table presupposes a measuring force of 5–10N. The tolerances of our micrometers are usually lower than the DIN permissiblevalues.
| Range mm | A µm | B µm | C µm |
|---|---|---|---|
| 0–25 | 4 | 2 | 2 |
| 25–50 | 4 | 2 | 2 |
| 50–75 | 5 | 3 | 3 |
| 75–100 | 5 | 3 | 3 |
| 100–125 | 6 | 3 | 4 |
| 125–150 | 6 | 3 | 5 |
| 150–175 | 7 | 4 | 6 |
| 175–200 | 7 | 4 | 6 |
| 200–225 | 8 | 4 | 7 |
| 200–225 | 8 | 4 | 7 |
| 225–250 | 8 | 4 | 8 |
| 250–275 | 9 | 5 | 9 |
| 275–300 | 9 | 5 | 9 |
| 300–325 | 10 | 5 | 10 |
| 325–350 | 10 | 5 | 10 |
| 350–375 | 11 | 6 | 11 |
| 375–400 | 11 | 6 | 12 |
| 400–425 | 12 | 6 | 12 |
| 425–450 | 12 | 6 | 13 |
| 450–475 | 13 | 7 | 14 |
| 475–500 | 13 | 7 | 15 |
Reading of scale drum
According to the model of the micrometer, the following versions are used:
Calibration:
Works calibration certificates are issued for all micrometers. A DKD calibration certificate from an accredited laboratory is likewise possible for many types.
Micrometers with special measuring faces and special devices:
We can supply micrometers with special measuring face shapes and all types of fine mechanical devices and spindle drives. For the preparation of a quotation, please send us your enquiries with drawings.
Examples of customer-specific special solutions:
