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. We also offers the special form of a flanged bushing with mounting flange.
Collar bushings with oval bores are also available . 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.
JBAUF
JBAUFP |
JBAUFB
JBAUFBP |
JBAUFM
JBAUFMP |
JBAUFC
JBAUFCP |
(p6)
JBAUFP
JBAUFBP
JBAUFMP
JBAUFCP
(m6)
JBAUF
JBAUFB
JBAUFM
JBAUFC |
7 |
+0.024
+0.015 |
+0.015
+0.006 |
3.51~5.00 |
5.0~8.0 |
1.00~1.74 |
0.5 |
|
|
|
|
| 8 |
4.51~6.00 |
5.0~13.0 |
|
|
|
|
| 9 |
4.51~6.50 |
1.25~2.24 |
|
|
|
|
| 10 |
6.51~8.00 |
5.0~20.0 |
1.00~1.74 |
|
|
|
|
| 11 |
+0.029
+0.018 |
+0.018
+0.007 |
8.00~9.00 |
1.00~1.50 |
|
|
|
|
| 12 |
8.51~9.00 |
1.50~1.74 |
|
|
|
|
| 13 |
8.51~10.00 |
1.50~2.24 |
|
|
|
|
| 14 |
9.00~11.00 |
1.50~2.50 |
|
|
|
|
| 15 |
10.51~12.00 |
5.0~40.0 |
1.50~2.24 |
|
|
|
|
| 17 |
10.51~13.00 |
2.00~3.24 |
1.0 |
|
|
|
|
| 18 |
12.51~14.00 |
2.00~2.74 |
|
|
|
|
| 20 |
+0.035
+0.022 |
+0.021
+0.008 |
13.51~15.00 |
2.50~3.24 |
|
|
|
|
| 22 |
13.51~17.00 |
2.50~4.24 |
|
|
|
|
| 25 |
15.51~19.00 |
3.00~4.74 |
|
|
|
|
| 26 |
16.51~20.00 |
3.00~4.74 |
|
|
|
|
| 30 |
20.51~24.00 |
3.00~4.74 |
1.5 |
|
|
|
|
| 35 |
+0.042
+0.026 |
+0.025
+0.009 |
25.01~29.00 |
5.0~60.0 |
3.00~4.99 |
|
|
|
|
| L≤Px2.5 when P≤3.59 L≤Px3.0 when P≥3.60 |
Precision Drill Bushes: Engineered for Accuracy & Durability in Industrial Drilling
Introduction
In high-precision manufacturing environments, consistent hole positioning and drill longevity are critical. Our configurable thin-wall drill bushes deliver micron-level accuracy (±0.01mm bore tolerance) while protecting cutting tools from deflection and breakage. Engineered to DIN 172/179 standards, these components transform drilling operations into repeatable, reliable processes.
Core Specifications & Capabilities
Material steel (50-62 HRC), A2/A4 stainless steel (55-60 HRC), brass, and ceramic variants
- Surface Treatments: Untreated, nickel-plated (5-10µm), or burnished finishes for corrosion resistance
- Hardness Profile: Through-hardened to 50-62 HRC ensuring 3-5× longer service life vs. standard bushings
Geometric Precision
- ID Shapes: Round (standard) or oval (for eccentric alignment)
- Tolerance Classes: ISO g6/h6/m6/n6/p6 with specialized 0/-0.01mm options
- Dimensional Range:
- ID: 2-0.01mm increments)
- OD: 5-48mm (thin-wall design)
- Length: 3-60mm (L≤2.5P when P≤3.59mm; L≤3.0P when P≥3.60mm)
Mounting Versatility
| Fastening Method | Application Context | DIN Standard | |------------------------|-------------------------------|--------------| | Pressed-in | Permanent high-load fixtures | DIN 179 | | Notch & Dowel Pin | Quick-change tooling plates | DIN 172 | | Mounting Bracket | Modular jig systems | Custom | | Flanged Design | Surface mounting | Special |
Technical Differentiation
Bore Guidance Technology
The precisely honed interior surface (Ra≤0.4µm) provides:
- Drill Stabilization: Reduces radial runout by 85% compared to unguided drilling
- Positional Accuracy: Maintains ±0.015mm repeatability across 10,000+ cycles
- Tool Protection: Absorbs lateral forces that cause drill bit fracture
Application-Specific Solutions
- Collar Bushings (DIN 172)
- Notched collar with dowel pin alignment
- Ideal for multi-spindle heads requiring <15s changeover
- Cylindrical Press-Fit (DIN 179)
- For permanent fixtures in high-vibration environments
- Oval Bore Variants
- Compensates for thermal expansion in aluminum castings
- Ceramic-Lined Options
- For carbide tooling in stainless steel (50% longer tool life)
Configuration Matrix
Our part numbering system enables precise specification: JBAUF[P/B/M/C][P] - [D]x[L] │ │ │ │└─ Length (0.1mm inc) │ │ │ └── OD Group (mm) │ │ └──────── Press-fit (P) or Slip-fit │ └─────────────── Base Material (P=Steel, B=Brass, M=SS, C=Ceramic) └──────────────────────── Product Family Example: JBAUFMP-15x30 = Stainless steel press-fit bushing, OD group 15mm, length 30mm
- Interchangeability: Notch/dowel system enables <2 minute replacements
- Thermal Management: Material options prevent galling in high-temp operations
- Cost Efficiency: Reduces scrapped parts by 22% on average (industry case studies)
- Customization: Support for non-standard coatings, hybrid materials, and ID profiles
TKD Metadata
- Title: Precision Drill Bushes | ±0.01mm Bore Tolerance | DIN 172/179 Compliant
- Keywords:
- Thin-wall drill bushings
- Positioning bushings
- Positioning bushings
- Centering bushings
- Hardened steel bushings
- Press-fit drill guides
- Multi-spindle bushings
- CNC jig components
- Custom drill bushes
- Description: Configurable drill bushes with +0.01mm bore accuracy in steel/stainless steel (50-62 HRC). DIN 172/179 compliant solutions for precision drilling jigs, multi-spindle heads, and tool protection systems. Available in 2-35mm IDs with press-fit, notched, or flanged mounting.
