Description
Overview:
This genuine Conical Spring is designed for Atlas Copco rock drills, including the BBD 15E and BBD 15ET. Made from high‐tensile spring steel, it maintains the correct tension in the percussion mechanism, helping the drill deliver consistent impact and smooth operation under heavy, repetitive use. The tapered profile ensures secure seating and repeatable preload within the assembly. Factory dimensions are 17 mm (0.67 in) overall length, with an 8 mm (0.31 in) large end reducing to 5 mm (0.20 in) at the small end for a precise fit. Suitable for pneumatic hand‐held rock drills used in construction, mining, utilities and quarrying. Supplied to OEM specification as a Genuine Atlas Copco part, OEM No. 3111 0023 00 and MPN 3111002300, for straightforward replacement and reliable service life.
Key Features:
- Genuine Atlas Copco part for assured compatibility and performance
- Precision dimensions: length 17 mm (0.67 in); large end 8 mm (0.31 in); small end 5 mm (0.20 in)
- High‐tensile spring steel for fatigue resistance and long service life
- Conical, tapered form for stable seating and consistent preload
- Direct replacement component; no modification required
- Helps maintain efficient percussion, reducing misfires and downtime
- Durable build for demanding site conditions, including quarrying and concrete work
- Works reliably with standard air tool lubrication to resist corrosion and wear
- Engineered to fit a wide range of Atlas Copco BBD‐series rock drills
Typical Applications:
Used during servicing or overhaul of Atlas Copco BBD‐series rock drills to restore correct tension in the impact assembly. Helps maintain blow energy, reduce vibration‐related wear, and keep drilling performance consistent when working in rock, masonry, and reinforced concrete on construction sites, road and rail maintenance, utilities installation, and quarry benches.
Also known as:
Tapered compression spring, coned coil spring, rock drill return spring, striker spring, percussion spring, impact mechanism spring.
Fits Models:
BBD 12D, BBD 12DC, BBD 12DCS, BBD 12DS, BBD 12LH, BBD 12LT, BBD 12LTS, BBD 12T-01, BBD 12TS-01, BBD 12WH, BBD 15E, BBD 15ET, BBD12D, BBD12DC, BBD12DCS, BBD12DS, BBD12LH, BBD12LT, BBD12LTS, BBD12T-01, BBD12TS-01, BBD12WH, BBD15E, BBD15ET
Alternate Part Numbers:
3111002300
Product Specifications
| L&S Part No. | 3111 0023 00 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Atlas Copco |
| OEM No. | 3111002300 |
| Unit of Sale | 1 |
| Applications | BBD 12D, BBD 12DC, BBD 12DCS, BBD 12DS, BBD 12LH, BBD 12LT, BBD 12LTS, BBD 12T-01, BBD 12TS-01, BBD 12WH, BBD 15E, BBD 15ET, BBD12D, BBD12DC, BBD12DCS, BBD12DS, BBD12LH, BBD12LT, BBD12LTS, BBD12T-01, BBD12TS-01, BBD12WH, BBD15E, BBD15ET |
| Machine Type | Handheld Rock Drills |
| Fits Brands | Atlas Copco |
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