ZKJ31-27 Air Needle Scaler – Composite Straight handle
The ZKJ31-27 Air Needle Scaler is a lightweight yet powerful surface preparation tool, designed with a durable composite straight handle for reduced weight, improved operator comfort, and enhanced control. With 27 high-strength steel needles, this scaler is ideal for removing rust, paint, weld slag, and scale across a wide variety of surfaces. Built for industrial, automotive, and construction environments, the ZKJ31-27 delivers consistent performance while minimizing operator fatigue, making it a dependable solution for both daily maintenance and professional heavy-duty applications.
Key Features
Composite Straight Handle
Lightweight construction reduces tool weight while improving durability and comfort.
27 Steel Needles
Provides efficient cleaning power suitable for medium-duty applications.
Balanced Performance
Delivers the right combination of speed and power for versatile use.
Durable Build
Engineered to withstand rugged industrial environments.
Straight Handle Design
Ideal for overhead or tight-space work, offering direct control and precision.
Air-Powered Reliability
Ensures steady performance with minimal downtime.
Benefits
Lightweight & Ergonomic: Composite handle design reduces strain during extended use.
Medium-Duty Power: Equipped with 27 needles, perfect for versatile scaling needs.
Durability: Built to withstand daily industrial use.
Versatile Applications: Works well on flat, curved, and uneven surfaces.
Improved Control: Straight handle design enhances precision in tight or overhead workspaces.
Applications
Automotive: Removing rust and coatings from frames, undercarriages, and body panels.
Metal Fabrication: Cleaning welds, slag, and preparing steel surfaces.
Construction: Preparing rebar, beams, and concrete surfaces for repair or coating.
Shipbuilding & Marine: Removing corrosion, barnacles, and coatings in confined spaces.
Industrial Maintenance: Surface prep in factories, plants, and heavy machinery upkeep.
Why Choose the ZKJ31-27 Air Needle Scaler – Composite Straight Handle?
The ZKJ31-27 Air Needle Scaler is designed for professionals who need a durable, lightweight, and efficient surface cleaning tool. Its composite straight handle reduces vibration and weight, while its 27-needle configuration delivers reliable medium-duty performance. Whether in automotive repair, shipbuilding, or industrial maintenance, the ZKJ31-27 offers the perfect balance of power, comfort, and versatility, making it a go-to choice for operators who demand efficiency and durability.
Features & Benefits
- Needle scaler for industrial application
- Sturdy and simple design for heavy and wide applications
- Superior design with internal spring components provides greater durability
Specification:
- Number of Needles: 27 pcs
- Piston Diameter:0.8(20) inch(mm)
- Piston Stroke: 1.06(27) inch(mm)
- Needle Diameter: 5/64×7(2×180) Øinch(mm)
- Blows Per Min.: 4000 bpm
- Avg. Air Cons.: 4(115) cfm(l/min)
- Overall Length: 13.6(345) inch(mm)
- Net Weight: 5.3(2.4) lbs(kgs)
- Min. Hose Size: 3/8(10) inch(mm)
- Air Inlet Size: 1/4 inch-NPT/PT
| Model | Number of Needles pcs | Piston Diameter inch(mm) | Piston Stroke inch(mm) | Needle Diameter Øinch(mm) | Blows Per Min. bpm | Avg. Air Cons. cfm(l/min) | Overall Length inch(mm) | Net Weight lbs(kgs) |
| ZKJ27 | 19 | 0.6(16) | 0.6(16) | 5/64×7(2×180) | 4000 | 2.5(70) | 11.2(285) | 3.5(1.6) |
| ZKJ31-12 | 12 | 0.8(20) | 1.06(27) | 1/8×7(3×180) | 4000 | 4(115) | 13.6(345) | 5.3(2.4) |
| ZKJ31-27 | 27 | 0.8(20) | 1.06(27) | 5/64×7(2×180) | 4000 | 4(115) | 13.6(345) | 5.3(2.4) |
| ZKJ35-23 | 23 | 0.94(24) | 1.06(27) | 1/8×7(3×180) | 4000 | 7(198) | 13.2(335) | 6.2(2.8) |
| ZKJ35-53 | 53 | 0.94(24) | 1.06(27) | 5/64×7(2×180) | 4000 | 7(198) | 13.2(335) | 6.2(2.8) |
| ZKJ39-14 | 14 | 1.1(28) | 1.1(28) | 5/32×7(4×180) | 3500 | 7.4(210) | 13.8(350) | 7.9(3.6) |
| ZKJ39-28 | 28 | 1.1(28) | 1.1(28) | 1/8×7(3×180) | 3500 | 7.4(210) | 13.8(350) | 7.9(3.6) |
| ZKJ39-66 | 66 | 1.1(28) | 1.1(28) | 5/64×7(2×180) | 3500 | 7.4(210) | 13.8(350) | 7.9(3.6) |
| ZKJ39A | ─ | 1.1(28) | 1.1(28) | ─ | 3500 | 7.4(210) | 13.8(350) | 7.9(3.6) |
| ZKJ831 | 19 | 0.75(19) | 2.7(70) | 1/8×7(3×180) | 3500 | 6.6(187) | 14.6(370) | 6(2.7) |
| ZNS-1228 | 12 | 0.75(19) | 1.6(41) | 1/8×4.9(3×126) | 2800 | 2.1(60) | 11.6(295) | 2.4(1.1) |
| ZNS1919 | 19 | 0.75(19) | 1.6(41) | 1/8×7(3×180) | 4000 | 7.4(210) | 12(305) | 4.9(2.2) |
| ZNS1919C | 19 | 0.75(19) | 1.6(41) | 1/8×7(3×180) | 4000 | 7.4(210) | 13(330) | 4.9(2.2) |
| ZNS-4111 | 13 | ─ | ─ | 0.051(1.3) | 3000 | 1.68(48.1) | 9.28(235.6) | 1.06(0.48) |
- Min. Hose Size: 3/8(10) inch(mm)
- Air Inlet Size: 1/4 inch-NPT/PT


