Drill bushes / through hole G6 / Ceramic

Specifications/Overview

■Bushings for Locating Pins - Ceramic Abrasion Data

Sample	Inner Diameter (Before Test)	Inner Diameter (After Test)	Difference
Ceramics JBC10−10	10.011	10.012	0.001
Steel JBA10−10	10.008	10.037	0.029

■Test Conditions
[Measuring Method]
Apply load on the bush by reciprocating ø10 round shaft with 40 mm stroke
with a 2 kg weight on the end in the crank mechanism (left diagram).

 

[Measuring Instrument Overview]
·Cranking Speed: 150 rpm
·Round Shaft Stroke: 40 mm
·Temperature: 25 to 27°C

 
·Operation Hours: 60 hours each
·Lubricant: JIS Machine Oil (Tellus 32) *drip-feed every 2 hours
·ø10 Round Shaft Material: EN 1.1545 Equiv. (No Heat Treatment)

■Testing Results
Ceramics excel in abrasion resistance compared to steel.
Suitable for long-term use with locating pins insertion and extraction, maintaining an excellent abrasion resistance.

App. Example

■Automotive parts welding machine

How to Mount: Set a plastic board. Using a plastic hammer, press Ceramic Bushing slightly in.
Circumstance: Set it between heat source and fixtures with high accuracy but transfer minimum heat to fixtures.

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

Example for using a positioning bushing
(1) Bushings for fixtures
 

 

Industrial Applications

3D printer industry

Automotive industry

Pharmaceutical industry

Packaging industry