B-115BMitutoyo reserves the right to change any or all aspects of any product specication, including prices, designs and service content, without notice.B-115BMaximum Loading Capacity of Micrometer HeadsThe maximum loading capacity of a micrometer head depends mainly on the method of mounting and whether the loading is static or dynamic (used as a stop, for example). Therefore the maximum loading capacity of each model cannot be denitely specied. The loading limits recommended by Mitutoyo (at less than 100,000 revolutions if used for measuring within the guaranteed accuracy range) and the results of static load tests using a small micrometer head are given below.Test methodMicrometer heads were set up as shown and the force at which the head was damaged or pushed out of the xture when a static load was applied, in direction P, was measured. (In the tests no account was taken of the guaranteed accuracy range.)1. Recommended maximum loading limit2. Static load test for micrometer heads (using 148-104/148-103 for this test)(1) Clamp nut (2) Split-body clamp(3) Setscrew clamp PClamp nutSplit-body clampPSetscrewPMaximum loading limitStandard typespindle pitch: 0.5 mmUp to approx. 39.2 N (4 kgf)*High function typeSpindle pitch: 0.1 mm/0.25 mmUp to approx. 19.6 N (2 kgf)Spindle pitch: 0.5 mmUp to approx. 39.2 N (4 kgf)Spindle pitch: 1.0 mmUp to approx. 58.8 N (6 kgf)Non-rotating spindleUp to approx. 19.6 N (2 kgf)Series 110 micro-ne feed type (with a differential mechanism)Up to approx. 19.6 N (2 kgf)* Up to approx. 19.6 N (2 kgf) only for Ultra small modelsMounting methodDamaging/dislodging load*(1) Clamp nut Damage to the main unit will occur at 8.63 to 9.8 kN (880 to 1000 kgf).(2) Split-body clampThe main unit will be pushed out of the xture at 0.69 to 0.98 kN (70 to 100 kgf).(3) Setscrew clamp Damage to the setscrew will occur at 0.69 to 1.08 kN (70 to 110 kgf).* These load values should only be used as an approximate guide.