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MBX Unit

Rigibore MBX boring units are precision units for mounting into standard or special boring tools.

  • These units are pre-tensioned, to eliminate backlash and allow adjustments only to be made from the front of the unit.
  • Self-clamping or self-locking.
  • Can be mounted in the same tools as a Sandvik R/L148C or T-MAX U fine boring unit.

Note: The MBX unit cannot be adjusted beyond its range and no range indicator is required.

Each graduation on the adjusting dial = 0.005 mm / 0.0002 in. adjustment on radius.
Each vernier graduation on the bush = 0.001 mm / 0.00004 in. adjustment on radius.
MBX CAD downloads MBX dimension calculator tool MBX conversion charts
  1. Mounting

    Ensure that the unit is correctly secured in its mounting hole and the 3 screws are clamping correctly.

  2. Adjustment

    The units are pre-tensioned and adjustment is made from the front only. To adjust outward, rotate the dial clockwise with the correct adjusting spanner. Each graduation on the adjusting dial = 0.005mm/.0002 inch on radius. Each graduation on the bush = 0.001mm/.00004inch adjustment on radius.

    When adjusting downward, rotate the dial in the opposite direction a little more than required and adjust up to the new setting on the dial.

  3. Maintenance

    The unit is lubricated and assembled to very close tolerances. It should not require any further attention under normal operat- ing conditions. If a unit is accidentally damaged, it is recommended that it is returned to Rigibore for assessment / repair.

Mounting Dimensions
T Style Insert C Style Insert d,H7 d211 d221 d23 h212 h22 h231 lTH rhc Th
06 16 19 4.6 3.2 11.5 2.8 1.6 9 9.65 +/- 0.02 M3
06
09 20 25 15.5 4 12.5 +/- 0.05
11 22 30 6.5 4.3 24 5 1.8 13 15.4 +/- 0.05 M4
16 32 46 11.9 5.4 33 6.3 - 16 23 +/- 0.05 M5
Spares & Accessories
Size Insert Insert Screw Retaining Screw and Wrench Kit Adjusting Spanner Torx Wrench Torx Driver
MBX1 CC..0602 RS2560 BTR001/10/3 R36 R37 R37D
TC..06T1 RS2045 R27 R27D
MBX2 TC..0902 RS2263 R46 R37 R37D
MBX3 TC..1102 RS2560 BTR001/7/3 R36
MBX4 TC..16T3 RS4084 BTR001/8/3 R76 R77 R77D
MBX Technical Data
Entering Angle KR Insert Type Ordering Code DM F1*1 L1*2 L1*3 L2 D MIN*4 E MAX
Straight MBX 90°
90° CC..060204 MBX1-590C06 16 5.10 13.20 13.30 25.10 27.00 0° 2.5
MBX1-590C06-LH
TC..090204 MBX2-590T09 20 6.30 18.01 18.30 33.40 36.50 3.5
MBX2-590T09-LH
TC..110204 MBX3-590T11 22 7.20 21.80 22.10 46.00 48.50 6.0
MBX3-590T11-LH
TC..16T308 MBX4-590T16 32 10.30 31.42 32.00 64.70 68.40 10.0
MBX4-590T16-LH
Angular MBX 90°
90° CC..060204 MBX1-290C06 16 0.40 14.08 14.30 26.00 25.30 2.0
MBX1-290C06-LH
TC..06T102 MBX1-290T06 0.25 14.11 24.80
MBX1-290T06-LH
TC..090204 MBX2-290T09 20 1.00 18.70 19.10 34.20 32.50 2.8
MBX2-290T09-LH
TC..110204 MBX3-290T11 22 1.20 22.60 23.00 46.80 42.00 4.8
MBX3-290T11-LH
TC..16T308 MBX4-290T16 32 1.40 32.51 33.30 66.60 59.40 8.0
MBX4-290T16-LH
  1. 90° approach are square mounted, centre of nose radius, straight mounting over insert
  2. Over datum rad for insert size
  3. Sharp point
  4. Minimum hole diameter calculated on the largest nose radius available

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