• Korloy Auto Tools MSB Micro Boring Tool MBBR Back Boring
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Korloy Auto Tools MSB Micro Boring Tool MBBR Back Boring

Korloy Auto Tools MSB Micro Boring Tool MBBR Back Boring

Solid carbide micro small boring tool MBBR for back boring of small bores on automatic lathes.

Key features

  • Micro small boring bar (MSB) for small-bore machining on automatic lathes
  • High-hardness grade PC30M for long tool life
  • Twin-edge (double-ended) and single-edge versions
  • For fittings, valves, medical and automotive parts
  • Used with SL sleeves

Specifications

Series MBBR
Application Back Boring
Grade PC30M (coated)
Grades PC30M
Stock Not marked as stock item
MBBR0310 Bore diameter Ød (mm): 3.0 | Min. machining dia. (mm): 3.2 | a (mm): 0.8 | s (mm): 1.4 | Cutting length ℓ (mm): 10 | Overall length L double-ended (mm): 40 | Overall length L single-ended (mm): 35 | Edge: Twin edge (double ended) | Grades: PC30M | Stock: Not marked as stock item
MBBR0310-1 Bore diameter Ød (mm): 3.0 | Min. machining dia. (mm): 3.2 | a (mm): 0.8 | s (mm): 1.4 | Cutting length ℓ (mm): 10 | Overall length L double-ended (mm): 40 | Overall length L single-ended (mm): 35 | Edge: Single edge (single ended) | Grades: PC30M | Stock: Not marked as stock item
MBBR0315 Bore diameter Ød (mm): 3.0 | Min. machining dia. (mm): 3.2 | a (mm): 0.8 | s (mm): 1.4 | Cutting length ℓ (mm): 15 | Overall length L double-ended (mm): 50 | Overall length L single-ended (mm): 45 | Edge: Twin edge (double ended) | Grades: PC30M | Stock: Not marked as stock item
MBBR0315-1 Bore diameter Ød (mm): 3.0 | Min. machining dia. (mm): 3.2 | a (mm): 0.8 | s (mm): 1.4 | Cutting length ℓ (mm): 15 | Overall length L double-ended (mm): 50 | Overall length L single-ended (mm): 45 | Edge: Single edge (single ended) | Grades: PC30M | Stock: Not marked as stock item
MBBR0410 Bore diameter Ød (mm): 4.0 | Min. machining dia. (mm): 4.2 | a (mm): 1.3 | s (mm): 1.9 | Cutting length ℓ (mm): 10 | Overall length L double-ended (mm): 40 | Overall length L single-ended (mm): 35 | Edge: Twin edge (double ended) | Grades: PC30M | Stock: Not marked as stock item
MBBR0410-1 Bore diameter Ød (mm): 4.0 | Min. machining dia. (mm): 4.2 | a (mm): 1.3 | s (mm): 1.9 | Cutting length ℓ (mm): 10 | Overall length L double-ended (mm): 40 | Overall length L single-ended (mm): 35 | Edge: Single edge (single ended) | Grades: PC30M | Stock: Not marked as stock item
MBBR0415 Bore diameter Ød (mm): 4.0 | Min. machining dia. (mm): 4.2 | a (mm): 1.3 | s (mm): 1.9 | Cutting length ℓ (mm): 15 | Overall length L double-ended (mm): 50 | Overall length L single-ended (mm): 45 | Edge: Twin edge (double ended) | Grades: PC30M | Stock: Not marked as stock item
MBBR0415-1 Bore diameter Ød (mm): 4.0 | Min. machining dia. (mm): 4.2 | a (mm): 1.3 | s (mm): 1.9 | Cutting length ℓ (mm): 15 | Overall length L double-ended (mm): 50 | Overall length L single-ended (mm): 45 | Edge: Single edge (single ended) | Grades: PC30M | Stock: Not marked as stock item
MBBR0420 Bore diameter Ød (mm): 4.0 | Min. machining dia. (mm): 4.2 | a (mm): 1.3 | s (mm): 1.9 | Cutting length ℓ (mm): 20 | Overall length L double-ended (mm): 60 | Overall length L single-ended (mm): 50 | Edge: Twin edge (double ended) | Grades: PC30M | Stock: Not marked as stock item
MBBR0420-1 Bore diameter Ød (mm): 4.0 | Min. machining dia. (mm): 4.2 | a (mm): 1.3 | s (mm): 1.9 | Cutting length ℓ (mm): 20 | Overall length L double-ended (mm): 60 | Overall length L single-ended (mm): 50 | Edge: Single edge (single ended) | Grades: PC30M | Stock: Not marked as stock item
MBBR0610 Bore diameter Ød (mm): 6.0 | Min. machining dia. (mm): 6.2 | a (mm): 1.9 | s (mm): 2.9 | Cutting length ℓ (mm): 10 | Overall length L double-ended (mm): 45 | Overall length L single-ended (mm): 40 | Edge: Twin edge (double ended) | Grades: PC30M | Stock: Not marked as stock item
MBBR0610-1 Bore diameter Ød (mm): 6.0 | Min. machining dia. (mm): 6.2 | a (mm): 1.9 | s (mm): 2.9 | Cutting length ℓ (mm): 10 | Overall length L double-ended (mm): 45 | Overall length L single-ended (mm): 40 | Edge: Single edge (single ended) | Grades: PC30M | Stock: Not marked as stock item
MBBR0615 Bore diameter Ød (mm): 6.0 | Min. machining dia. (mm): 6.2 | a (mm): 1.9 | s (mm): 2.9 | Cutting length ℓ (mm): 15 | Overall length L double-ended (mm): 55 | Overall length L single-ended (mm): 45 | Edge: Twin edge (double ended) | Grades: PC30M | Stock: Not marked as stock item
MBBR0615-1 Bore diameter Ød (mm): 6.0 | Min. machining dia. (mm): 6.2 | a (mm): 1.9 | s (mm): 2.9 | Cutting length ℓ (mm): 15 | Overall length L double-ended (mm): 55 | Overall length L single-ended (mm): 45 | Edge: Single edge (single ended) | Grades: PC30M | Stock: Not marked as stock item
MBBR0620 Bore diameter Ød (mm): 6.0 | Min. machining dia. (mm): 6.2 | a (mm): 1.9 | s (mm): 2.9 | Cutting length ℓ (mm): 20 | Overall length L double-ended (mm): 65 | Overall length L single-ended (mm): 50 | Edge: Twin edge (double ended) | Grades: PC30M | Stock: Not marked as stock item
MBBR0620-1 Bore diameter Ød (mm): 6.0 | Min. machining dia. (mm): 6.2 | a (mm): 1.9 | s (mm): 2.9 | Cutting length ℓ (mm): 20 | Overall length L double-ended (mm): 65 | Overall length L single-ended (mm): 50 | Edge: Single edge (single ended) | Grades: PC30M | Stock: Not marked as stock item
Boring BarsKorloy
16 product codes available in this family
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Korloy Auto Tools MSB Micro Boring Tool MBBR Back Boring

Brand Korloy·Boring Bars

Available part numbers (16)

MBBR0310, MBBR0310-1, MBBR0315, MBBR0315-1, MBBR0410, MBBR0410-1, MBBR0415, MBBR0415-1, MBBR0420, MBBR0420-1 + 6 more — see full table ↓

How to order

Send the Korloy part numbers and quantities through our RFQ form or to info@prosourcemro.com. We confirm price, availability and lead time within 1 business day — no account needed.

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Product codes & specifications
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Product codeSpec
MBBR0310Bore diameter Ød (mm): 3.0 | Min. machining dia. (mm): 3.2 | a (mm): 0.8 | s (mm): 1.4 | Cutting length ℓ (mm): 10 | Overall length L double-ended (mm): 40 | Overall length L single-ended (mm): 35 | Edge: Twin edge (double ended) | Grades: PC30M | Stock: Not marked as stock item
MBBR0310-1Bore diameter Ød (mm): 3.0 | Min. machining dia. (mm): 3.2 | a (mm): 0.8 | s (mm): 1.4 | Cutting length ℓ (mm): 10 | Overall length L double-ended (mm): 40 | Overall length L single-ended (mm): 35 | Edge: Single edge (single ended) | Grades: PC30M | Stock: Not marked as stock item
MBBR0315Bore diameter Ød (mm): 3.0 | Min. machining dia. (mm): 3.2 | a (mm): 0.8 | s (mm): 1.4 | Cutting length ℓ (mm): 15 | Overall length L double-ended (mm): 50 | Overall length L single-ended (mm): 45 | Edge: Twin edge (double ended) | Grades: PC30M | Stock: Not marked as stock item
MBBR0315-1Bore diameter Ød (mm): 3.0 | Min. machining dia. (mm): 3.2 | a (mm): 0.8 | s (mm): 1.4 | Cutting length ℓ (mm): 15 | Overall length L double-ended (mm): 50 | Overall length L single-ended (mm): 45 | Edge: Single edge (single ended) | Grades: PC30M | Stock: Not marked as stock item
MBBR0410Bore diameter Ød (mm): 4.0 | Min. machining dia. (mm): 4.2 | a (mm): 1.3 | s (mm): 1.9 | Cutting length ℓ (mm): 10 | Overall length L double-ended (mm): 40 | Overall length L single-ended (mm): 35 | Edge: Twin edge (double ended) | Grades: PC30M | Stock: Not marked as stock item
MBBR0410-1Bore diameter Ød (mm): 4.0 | Min. machining dia. (mm): 4.2 | a (mm): 1.3 | s (mm): 1.9 | Cutting length ℓ (mm): 10 | Overall length L double-ended (mm): 40 | Overall length L single-ended (mm): 35 | Edge: Single edge (single ended) | Grades: PC30M | Stock: Not marked as stock item
MBBR0415Bore diameter Ød (mm): 4.0 | Min. machining dia. (mm): 4.2 | a (mm): 1.3 | s (mm): 1.9 | Cutting length ℓ (mm): 15 | Overall length L double-ended (mm): 50 | Overall length L single-ended (mm): 45 | Edge: Twin edge (double ended) | Grades: PC30M | Stock: Not marked as stock item
MBBR0415-1Bore diameter Ød (mm): 4.0 | Min. machining dia. (mm): 4.2 | a (mm): 1.3 | s (mm): 1.9 | Cutting length ℓ (mm): 15 | Overall length L double-ended (mm): 50 | Overall length L single-ended (mm): 45 | Edge: Single edge (single ended) | Grades: PC30M | Stock: Not marked as stock item
MBBR0420Bore diameter Ød (mm): 4.0 | Min. machining dia. (mm): 4.2 | a (mm): 1.3 | s (mm): 1.9 | Cutting length ℓ (mm): 20 | Overall length L double-ended (mm): 60 | Overall length L single-ended (mm): 50 | Edge: Twin edge (double ended) | Grades: PC30M | Stock: Not marked as stock item
MBBR0420-1Bore diameter Ød (mm): 4.0 | Min. machining dia. (mm): 4.2 | a (mm): 1.3 | s (mm): 1.9 | Cutting length ℓ (mm): 20 | Overall length L double-ended (mm): 60 | Overall length L single-ended (mm): 50 | Edge: Single edge (single ended) | Grades: PC30M | Stock: Not marked as stock item
MBBR0610Bore diameter Ød (mm): 6.0 | Min. machining dia. (mm): 6.2 | a (mm): 1.9 | s (mm): 2.9 | Cutting length ℓ (mm): 10 | Overall length L double-ended (mm): 45 | Overall length L single-ended (mm): 40 | Edge: Twin edge (double ended) | Grades: PC30M | Stock: Not marked as stock item
MBBR0610-1Bore diameter Ød (mm): 6.0 | Min. machining dia. (mm): 6.2 | a (mm): 1.9 | s (mm): 2.9 | Cutting length ℓ (mm): 10 | Overall length L double-ended (mm): 45 | Overall length L single-ended (mm): 40 | Edge: Single edge (single ended) | Grades: PC30M | Stock: Not marked as stock item
MBBR0615Bore diameter Ød (mm): 6.0 | Min. machining dia. (mm): 6.2 | a (mm): 1.9 | s (mm): 2.9 | Cutting length ℓ (mm): 15 | Overall length L double-ended (mm): 55 | Overall length L single-ended (mm): 45 | Edge: Twin edge (double ended) | Grades: PC30M | Stock: Not marked as stock item
MBBR0615-1Bore diameter Ød (mm): 6.0 | Min. machining dia. (mm): 6.2 | a (mm): 1.9 | s (mm): 2.9 | Cutting length ℓ (mm): 15 | Overall length L double-ended (mm): 55 | Overall length L single-ended (mm): 45 | Edge: Single edge (single ended) | Grades: PC30M | Stock: Not marked as stock item
MBBR0620Bore diameter Ød (mm): 6.0 | Min. machining dia. (mm): 6.2 | a (mm): 1.9 | s (mm): 2.9 | Cutting length ℓ (mm): 20 | Overall length L double-ended (mm): 65 | Overall length L single-ended (mm): 50 | Edge: Twin edge (double ended) | Grades: PC30M | Stock: Not marked as stock item
MBBR0620-1Bore diameter Ød (mm): 6.0 | Min. machining dia. (mm): 6.2 | a (mm): 1.9 | s (mm): 2.9 | Cutting length ℓ (mm): 20 | Overall length L double-ended (mm): 65 | Overall length L single-ended (mm): 50 | Edge: Single edge (single ended) | Grades: PC30M | Stock: Not marked as stock item

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