08
2026
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07
New Launch – 22IR 6.0ISO LAD Internal Metric Threading Carbide Insert Optimized for Large Pitch Steel Thread Machining
1. Manufacturing Pain Points for Large Pitch Internal ISO Threads
Large-pitch internal metric thread machining has long been a tough bottleneck for mass production factories across hydraulic equipment, heavy machinery, automotive chassis and pipeline component industries. Traditional standard threading inserts face multiple typical defects during processing 6mm pitch internal threads: unmanageable tangled long chips scratching thread surfaces, frequent edge chipping under heavy cutting load, unstable thread profile accuracy after long continuous runs, fast abrasive wear on cutting edges, and frequent insert replacement that drags down workshop overall equipment efficiency (OEE).
For blind deep holes and large stock allowance internal thread turning of carbon steel and alloy steel, most universal thread inserts lack targeted chip-breaking geometry and balanced toughness. Operators often have to reduce cutting parameters to avoid scrap parts, which seriously lowers production throughput and raises comprehensive manufacturing costs.
To solve the above industrial pain points, our R&D team officially releases the 22IR 6.0ISO LAD right-hand internal carbide threading insert, a specialized solution for 6mm pitch full-profile ISO metric internal thread turning. Combined with optimized LAD chip breaker geometry and high-toughness carbide substrate, this insert delivers stable chip control, extended service life and consistent thread precision for large-pitch internal thread mass production.
2. Full Model Code Explanation of 22IR 6.0ISO LAD
Every code stands for standardized industrial design matching global CNC lathe tool systems:
- 22: Insert inscribed circle size 22, compatible with 22 series laydown internal thread tool holders, supports large-diameter bore internal threading with strong clamping rigidity
- IR: Internal Right-hand, standard RH internal thread turning insert, widely adaptable to all common CNC lathe and turning center holders
- 6.0ISO: Full 60° ISO metric thread profile, dedicated for 6mm pitch standard metric internal threads, fully compliant with international ISO thread tolerance standards
- LAD: Special customized medium-load chip-breaking groove type, developed for semi-finish and medium rough turning of steel workpieces, with outstanding curling and evacuation performance for long steel chips
3. Four Core Technical Advantages
3.1 Optimized LAD Chip Breaker Geometry for Large Pitch Chip Control
The exclusive LAD multi-stage chip groove is precisely ground for 6mm large pitch cutting. It breaks continuous steel swarf into short C-shaped chips, completely eliminating wire-like tangled chips that scratch finished thread surfaces or jam the workpiece bore. It maintains smooth chip evacuation even in deep blind hole internal threading, drastically improving workpiece qualification rate and reducing manual cleaning downtime.
3.2 High Rigidity 22-Size Insert Base for Heavy Cutting Load
The 22mm inscribed circle design provides larger bearing area between insert and tool holder, effectively resisting cutting vibration and insert deflection under heavy feed and deep cut depth. It prevents thread pitch error and tooth profile collapse during intermittent cutting of forgings and thick-wall steel parts.
3.3 Balanced Toughness & Wear Resistant Carbide Substrate
Available in multiple standard ISO P grades for carbon steel, alloy steel and structural steel. The tungsten carbide substrate with rational WC-Co ratio balances impact resistance and anti-abrasion performance. Equipped with multi-layer PVD nano coating, it lowers friction coefficient and thermal wear, lifting tool service life by 35%–55% compared with generic threading inserts.
3.4 Wide Industrial Compatibility & Stable Batch Performance
22IR 6.0ISO LAD matches all standard 22IR internal thread tool holders without extra customized fixtures. It fits ordinary CNC lathes, heavy-duty turning centers and automatic production lines. It performs stably in continuous mass production of hydraulic valve bodies, heavy mechanical shafts, pipeline connectors and automotive power components with M60 equivalent large metric internal threads.
4. On-Site Workshop Test Performance
We completed multiple batch cutting verification on 45# carbon steel and 40Cr alloy steel workpieces with 6mm pitch internal threads:
- Smooth chip removal, zero thread surface burrs and scratch defects
- Stable thread dimensional tolerance within ISO 6H standard for long-run machining
- Less than 10% dimensional deviation after continuous 8-hour non-stop cutting
- 40% reduction in tool change frequency, greatly cutting auxiliary production time
- Allows higher feed rate and cutting speed to boost single-line output
5. Application Scope & Matching Suggestions
Suitable Workpiece Materials
Carbon steel, alloy structural steel, medium-hard steel forgings (ISO P work material group)
Applicable Machining Scenarios
Semi-finish turning & medium rough turning of large-pitch metric internal threads; deep blind hole internal threading; mass production of heavy machinery, hydraulic fittings, automotive transmission parts
Matching Tool Holder
Standard 22IR laydown internal right-hand thread turning tool holder
Recommended Cutting Parameters
Medium cutting speed 120–220 m/min, moderate feed rate 0.2–0.4 mm/rev, sufficient internal cooling supply preferred
6. Conclusion
The launch of 22IR 6.0ISO LAD fills the market gap of professional large-pitch ISO internal threading inserts targeting steel heavy-duty machining. It offers global manufacturing factories a cost-effective, high-stability threading solution to upgrade thread quality, raise production efficiency and cut overall tool expenditure.
Our technical team provides free customized cutting parameter guidance and full after-sales technical support. Global distributors, machining workshops and OEM manufacturers are welcome to inquire about samples, bulk orders and customized coating/grade services.
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