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- Inner Diameter(mm)
- 12
- Outer Diameter(mm)
- 18
- Outer Diameter Tolerance
- Material
- Steel
- EN 1.2510 Equiv.
- Surface Treatment
- Length L(mm)
- 20
- Type
- CAD
- 2D
- 3D
- Dias de envio estimados
- Tudo
- Envio possível no próprio dia
Drill bushes / bore G6 / steel, stainless steel / 50HRC, 60HRC (JBA12-20)
Desenho de contorno e tabela de especificações
Back to the Category Bushings for Fixtures
Technical Drawing - Flanged Drill Bushes
Open the technical drawing in the new window
Available dimensions and tolerances can be found under the tab More information.
Overview of the various designs as PDF
Basic Properties (e.g., material, hardness, coating, tolerance) - Flanged Drill Bushes
| Material | Surface Treatment | Hardness | Type | |
| p6 | m6 | |||
| EN 1.2510 Equiv. | - | 60HRC~ | JBA | JBAM |
| EN 1.2510 Equiv. | Electroless Nickel Plating | 60HRC~ | JBAN | JBAMN |
| EN 1.4037 Equiv. | - | 50HRC~ | JBAC | JBAMC |
Further specifications can be found under the tab More information.
Composition of a Product Code - Flanged Drill Bushes
| Part Number | - | L |
| JBAC12 JBAUN8 | - - | 10 8 |
Informações detalhadas
Informações básicas
Contorno e especificações
Back to the Category Bushings for Fixtures
Technical Drawing - Flanged Drill Bushes
Open the technical drawing in the new window
Available dimensions and tolerances can be found under the tab More information.
Overview of the various designs as PDF
Specification Tables - Flanged Drill Bushes
| Part Number | L Selection | Thickness (N) | R | D | D Tolerance | Unit Price | |||||||||||||||||||
| Type | d | D Tolerance | p6 | m6 | JBA JBAM | JBAN JBAMN | JBAC JBAMC | ||||||||||||||||||
| No Surface Treatment | Electroless Nickel Plating | ||||||||||||||||||||||||
| (p6) JBA JBAN JBAC (m6) JBAM JBAMN JBAMC | 2 | G6 | +0.008 +0.002 | H7 | +0.010 0 | 5 | 6 | 7 | 8 | 10 | 12 | 1.5 | 0.8 | 5 | +0.020 +0.012 | +0.012 +0.004 | |||||||||
| 3 | 2 | 7 | +0.024 +0.015 | +0.015 +0.006 | |||||||||||||||||||||
| 4 | +0.012 +0.004 | +0.012 0 | 5 | 6 | 7 | 8 | 10 | 12 | 15 | *16 | 20 | 2 | 1 | 8 | |||||||||||
| 5 | 5 | 6 | 7 | 8 | 10 | 12 | 15 | 16 | 20 | 2.5 | 10 | ||||||||||||||
| 6 | 5 | 6 | 7 | 8 | 10 | 12 | 15 | 16 | 20 | 25 | 2 | ||||||||||||||
| 8 | +0.014 +0.005 | G6 | +0.014 +0.005 | 2 | 2 | 12 | +0.029 +0.018 | +0.018 +0.007 | |||||||||||||||||
| 10 | 6 | 7 | 8 | 10 | 12 | 15 | 16 | 20 | 25 | 30 | 2.5 | 15 | |||||||||||||
| 12 | +0.017 +0.006 | +0.017 +0.006 | 8 | 10 | 12 | 15 | 16 | 20 | 25 | 30 | 3 | 18 | |||||||||||||
| 13 | 10 | 12 | *15 | 16 | 20 | *25 | 30 | 4.5 | 22 | +0.035 +0.022 | +0.021 +0.008 | ||||||||||||||
| 15 | 12 | 15 | 16 | 20 | *25 | 30 | 5 | 25 | |||||||||||||||||
| 16 | 12 | 15 | 16 | 20 | 25 | 30 | 5 | 26 | |||||||||||||||||
| 20 | +0.020 +0.007 | +0.020 +0.007 | 5 | 3 | 30 | ||||||||||||||||||||
| 25 | 16 | 20 | 25 | 30 | *35 | 5 | 35 | +0.042 +0.026 | +0.025 +0.009 | ||||||||||||||||
General Information - Flanged Drill Bushes
Selection between drill bushings / positioning bushings / centering bushings
- Material: steel, stainless steel, brass, ceramics
- Coatings: untreated, nickel-plated, burnished
- Hardness: 50HRC to 62HRC
- Fastening: with notch, mounting bracket, with dowel pin, pressed-in
- Inside diameter shape: round, oval
- ISO tolerances: g6, h6, m6, n6, p6, 0/-0.2, 0/-0.01
- Inside diameter: 2 mm to 35 mm
- Outside diameter: 5 mm to 48 mm
- Length: 3 mm to 60 mm
Here to the drill bushings Overview as PDF
Description / Basics
A drill bushing is intended for precise centering, positioning and guidance of drills. They can be used in drilling rigs or for multi-spindle drilling heads as well as a drilling jig. Therefore, it is possible to create an accurate and recurring bore at the same position in one component. In addition, through the guide the drill bushing protects the drill from breakage. The most common bushings are the collar drill bushing according to DIN 172 and the cylindrical drill bushing according to DIN 179.
Drill bushings and collar drill bushings are available in a variety of fastening types. They can be pressed in or secured with a semi-circular notch in the collar of the plug-in fulcrum pins. Since it is not pressed, this has the advantage of quick interchangeability. MISUMI also offers the special form of a flanged bushing with mounting flange.
Collar bushings with oval bores are also available at MISUMI. These are provided with a semi-circular notch in the collar, which, in combination with a dowel pin, serves to align the collar drill bushing.
Drill bushings are often used as positioning bushings or centering bushings.
Due to the rounded insertion of the drill bushing, it can serve as a joining opening for centering pins or height adjusting pins.
Application Examples - Flanged Drill Bushes
Example for using a centering bolt/centering bushing with collar
(1) Locating pin, (2) Bushings for fixtures
Example for using a centering bolt/centering bushing
(1) Locating pin , (2) Bushings for fixtures, (3) Mounting plate
Industrial Applications
