MIRA BB86 Counterbore Unit
BB-86
BB-86 Counterbore Unit - Fully Portable and Simple to Operate
The BB-86 is a fully portable and simple to operate tool to recut Diesel sleeve counterbores.To guarantee a perfect seal between engine block and wet liners, the counterbore seat of an engine block must be refaced during engine overhaul and in case of leaks. This job is rapidly and simlpy carried out with the accurate BB-86 unit which fits and centers directly on the engine block. Its centering is automatic and the unit is clamped by means of a strong electro magnet. As the unit is placed directly on the sealing surface of an engine block, the reface counterbore seats will automatically be parallel with the sealing surface. The refacing procedure can be carried out on installed as well as on removed engine blocks or even built-in underfloor engines.
Following individual MIRA BB-86 units are available:
- BB-86 Mini (154mm inside magnet diameter)
- BB-86 Standard (170mm inside magnet diameter)
- BB-86 Giant (198mm inside magnet diameter)
- BB-86 Extension (Up to 200mm in depth. Complete
Kit)
The BB-86 unit includes
- BB-86 unit
- turning handle
- service tooling (screw drivers)
- Instruction manual
- wooden storage box
Standard MIRA cutting tool range
| Cutting tools | Bore diameters in mm |
| MB85 | 73.00 - 86.00mm |
| MB86 | 85.00 - 104.00mm |
| MB87 | 97.00 - 126.00mm |
| MB88 | 123.00 - 160.00mm |
| MB88DAF | 123.00 - 158.00mm |
| MB88AD | 130.00 - 166.00mm |
| MB89* | 158.00 - 194.00mm |
| MB136 | 105.00 - 130.00mm |
| MB137 | 130.00 - 160.00mm |
| MB138 | 160.00 - 190.00mm |
| MB139 | 190.00 - 220.00mm |
*only in combination with an intermediate steel plate!
Optional Counterbore Extension:
MIRA can offer a complete extension kit for refacing deep seated counterbores an todays truck engines.
Up to 220mm in the depth can easely be refaced by simply adapting the special extension unit!
The BB-86 extension is adaptable on all genuine MIRA BB-86 units!
Delivery without BB device!
Please refer to the above pdf brochures or Email us for further Information and Specifications: info@kerzan.co.nz