Pneumatic Jet Chisel ALLK-20
For chiseling or smoothing welds, castings and other materials. Never skip a blow, cleans and descales all jobs fast. Jet chisel needles adjust to the contour of any surface automatically.
IMPA Code: 590462
Equivalent to Pneumatic Jet Chisel JT-20
For chiseling or smoothing welds, castings and other materials. Never skip a blow, cleans and descales all jobs fast. Jet chisel needles adjust to the contour of any surface automatically.
The chisel can reach into corners, curvatures, and uneven surfaces, making it a necessary tool for ships.
| CODE | Model | O.A. Length mm | Needles mm | Air | WT. kg | |
| Inlet | Consumption CBM/min | |||||
| 59 04 62 | JC-20 | 245 | Dia.2x29s
Dia.3x12s* |
3/8″ | 0.15 | 2.4 |
- This product comes with 12 pcs of 3mm descaling needles. If you want to change it 2mm descaling needles, please let us know before ordering.
Carton Packing.
1 set in one carton.
Net weight: 2.368 Kgs
Gross Weight: 2.608 Kgs
Mea: 28x12x9 cm
ALLK-20 Pneumatic Jet Chisel Needle Scaler
IMPA Code: 590462 | Model: ALLK-20 (JT-20) | Marine Grade
Product Overview
The ALLK-20 Pneumatic Jet Chisel (IMPA Code: 590462) from ALL-K MARINE CO.,LTD. is a compact yet powerful needle scaler engineered specifically for demanding marine maintenance tasks. As a high-performance equivalent to the JT-20 model, this tool excels at chiseling or smoothing welds, castings and other materials in the challenging environments of ship repair and maintenance.
What makes the ALLK-20 a necessary tool for ships is its unique ability to reach into corners, curvatures, and uneven surfaces commonly found on vessel hulls, deck structures, and confined machinery spaces. Its self-adjusting needle system automatically conforms to any surface contour—whether flat plates, curved hull sections, or irregular weld joints—ensuring complete contact and consistent cleaning action.
The pneumatic mechanism provides continuous high-frequency blows that never skip, allowing operators to clean and descale all jobs fast with uniform results. At just 2.368kg and compact dimensions of 28×12×9 cm, it offers exceptional maneuverability in tight spaces where larger tools cannot operate effectively.
Contact ALL-K MARINE CO.,LTD. at admin@all-kmarine.com.cn for specifications and availability of this essential marine maintenance tool.
Compatibility & Replacement Information
Direct Equivalent To:
- JT-20 Pneumatic Jet Chisel
- IMPA 590462 Specification Tools
Marine Certification: The ALLK-20 meets IMPA 590462 standards for shipboard use, making it fully compatible with existing JT-20 accessories and replacement needles while offering reliable supply and technical support directly from ALL-K MARINE CO.,LTD.
Key Features & Benefits
Access to Confined Spaces
Compact design (28×12×9 cm) and ergonomic pistol grip allow the tool to reach into corners, curvatures, and uneven surfaces on ships where larger tools cannot operate—essential for hull maintenance and structural repairs.
Automatic Contour Adjustment
Dual needle system (29×2Φ + 12×3Φ) adjusts to the contour of any surface automatically. Maintains optimal contact on curved hull plates, weld seams, and irregular castings without operator repositioning.
Continuous Blow Technology
Precision-engineered pneumatic mechanism ensures the tool never skips a blow, delivering consistent impact force for uniform cleaning across weld seams, castings, and structural steel—cleans and descales all jobs fast.
Lightweight Marine Design
At only 2.368kg net weight, reduces operator fatigue during extended use in shipyards and onboard vessels. Optimized 0.2 m³/min air consumption compatible with standard shipboard compressed air systems.
Technical Specifications
Equivalent to JT-20 specifications | IMPA 590462 | Compact Marine Design
| Attribute | ALL-K Specification | JT-20 Equivalent |
|---|---|---|
| Brand | ALL-K MARINE CO.,LTD. | – |
| Model | ALLK-20 | JT-20 |
| IMPA Code | 590462 | |
| Needle Configuration | 2Φ × 29 pcs (fine) 3Φ × 12 pcs (medium) |
|
| Working Principle | Self-adjusting contour following, never skip a blow | |
| Air Inlet | 3/8″ NPT | |
| Air Consumption | 0.2 m³/min | |
| Net Weight (N.W.) | 2.368 kg | |
| Gross Weight (G.W.) | 2.61 kg | |
| Dimensions (L×W×H) | 28 × 12 × 9 cm | |
| Special Feature | Reaches into corners, curvatures, and uneven surfaces | |
Essential Marine Applications
The ALLK-20 is specifically designed to access difficult areas on ships that other tools cannot reach:
ALL-K Jet Chisel Series Comparison
Select the appropriate ALL-K model for your marine surface preparation requirements:
| IMPA Code | ALL-K Model | Equivalent To | Needle Setup | Weight | Best For |
|---|---|---|---|---|---|
| 590461 | ALLK-16 | JC-16 | 2Φ×29 pcs | 1.59 kg | Ultra-light precision work |
| 590462 | ALLK-20 | JT-20 | 2Φ×29 + 3Φ×12 | 2.368 kg | Corners, curvatures, ships |
| 590463 | ALLK-24 | JEX-24 | 2Φ×53 + 3Φ×23 | 2.8 kg | Medium duty weld smoothing |
| 590464 | ALLK-66 | JEX-66, JEX-28 | 2Φ×66 + 3Φ×28 + 4Φ×14 | 3.41 kg | Heavy duty industrial |
ALL-K MARINE CO.,LTD. manufactures full range of IMPA coded pneumatic tools. The ALLK-20 (590462) is specifically optimized for ship maintenance with its compact size and corner-access capability.
Operational Advantages for Marine Use
- Corner & Edge Access: Slim profile reaches into 90-degree corners of hull plating and structural intersections that bulkier tools cannot access
- Curvature Conformance: Dual needle sizes automatically adjust to ship hull curvatures, maintaining cleaning efficiency on cylindrical or spherical surfaces
- Uneven Surface Capability: Handles pitted steel, rough castings, and irregular weld profiles found in aged vessels without manual tool adjustment
- Never Skip a Blow: Continuous pneumatic action ensures complete coverage in confined spaces where visibility is limited
- Fast Descaling: Cleans and descales all jobs fast, reducing time spent in hazardous confined spaces such as tanks and bilges
- Shipboard Air Compatible: Low 0.2 m³/min consumption works with standard vessel compressed air systems at 90 PSI (6.3 bar)
Maintenance for Optimal Performance
To maintain the never skip a blow performance of your ALLK-20 from ALL-K MARINE CO.,LTD. in marine environments:
- Daily lubrication: 2-3 drops of pneumatic tool oil through air inlet before operation (essential in salt air environments)
- Needle inspection: Check 29×2mm and 12×3mm needles for bending or wear that may affect ability to reach into corners and curvatures
- Corrosion prevention: After use in marine environments, run dry air through tool for 10 seconds to expel moisture
- Air quality: Use filtered, dry compressed air to prevent internal corrosion and maintain consistent striking force in humid shipyard conditions
- Storage: Store with needles retracted in dry environment to prevent sea air corrosion of needle tips
Replacement needle sets compatible with JT-20 specifications available from ALL-K MARINE CO.,LTD. Contact admin@all-kmarine.com.cn for marine-grade spare parts.
Contact ALL-K MARINE CO.,LTD.
ALL-K MARINE CO.,LTD.
Email: admin@all-kmarine.com.cn
Web: www.all-kmarine.com
IMPA 590462 | ALLK-20 (JT-20 Equivalent) | Essential Tool for Ships
