ZCC.CT APKT150412-HT YBG302 Carbide Insert – 15mm Milling R1.2 Heavy Cut Steel
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APKT150412-HT YBG302 ZCC.CT Milling Insert
The Ultimate Heavy-Duty Roughing Solution for Steel & Alloys
Product Overview
"Which insert is best for heavy roughing in alloy steel when the machine setup isn't perfectly rigid?"
The APKT150412-HT YBG302 is ZCC.CT's answer to the toughest milling challenges. The HT chipbreaker is specifically engineered with a wider negative land to provide maximum edge protection during heavy-duty roughing. When combined with the YBG302 PVD Grade—known for its exceptional impact toughness—this insert excels in interrupted cuts and machining materials with hard surface scales or uneven depths of cut.
Model Code Interpretation
90° Parallelogram
11° Clearance Angle
Hole & Chipbreaker
Edge Length (15mm)
Thickness (4.76mm)
Radius (1.2mm)
Heavy-Duty Slot
Product Core Advantages
- HT Reinforced Geometry: A wider negative chamfer ensures the insert survives the highest cutting forces.
- Nano-PVD YBG302: Thicker TiAlN coating layer providing a thermal barrier and extreme edge toughness.
- Shock Resistance: Specifically designed to handle interrupted cuts and machine "crusty" surface materials.
- 1.2mm Corner Radius: Distributes cutting pressure to prevent corner breakout during large-depth milling.
Application Scenarios
- Large-scale roughing of carbon steel and alloy steels (P20, 4140, etc.).
- Milling parts with holes, slots, or interrupted surfaces.
- Ideal for older CNC machines or manual lathes where rigidity is low.
- Heavy face milling and 90-degree step machining in structural steel.
Technical Specifications & Cutting Data
| Metric Model | Inch Equivalent | Cutting Speed (Vc) | Feed per Tooth (fz) |
|---|---|---|---|
| APKT150412-HT | APKT 0.591" x 0.187" R0.047" | 120 - 240 m/min | 0.15 - 0.40 mm/z |
Compatibility: Matching Tool Holders
Standard APKT 15 size. Fully compatible with ZCC.CT and standard ISO 90° milling cutters:
ZCC Grade Logic
- YBG152: High speed finishing for cast iron.
- YBG202: Universal PVD for steel finishing and medium cuts.
- YBG302 (This Product): Maximum toughness. The "Safety Choice" for heavy roughing.
Why Trust BEYOND / OYYU?
- ✅ Technical Director Verification: Every listing is audited for technical accuracy.
- ✅ Genuine Original: 100% factory-sealed ZCC.CT inserts with security labels.
- ✅ Global B2B Support: Extensive experience shipping to USA, EU, and Asian markets.
Verified Customer Feedback
"The HT chipbreaker is a tank. I used it on some rough 4140 forgings and it didn't even flinch. Great tool life."
Brad S. - USA"Beste Wahl für schwere Schruppbearbeitung. YBG302 ist extrem zäh."
Klaus M. - Germany"Ottimo per fresatura pesante. La geometria HT riduce drasticamente le vibrazioni su tagli interrotti."
Giuseppe F. - Italy"非常にタフなチップです。鋳物の荒加工でチップの欠けがなくなりました。"
Kenji K. - Japan"ZCC APKT is my go-to for standard shop work. Reliable and predictable performance."
S. Robinson - UKTechnical FAQ
GM is better for universal machining and general-purpose work. HT should be chosen specifically for Heavy Duty Roughing or when the edge keeps chipping in difficult conditions.
While it depends on the holder, the APKT 15 series can typically handle an axial depth of cut (Ap) up to 12-14mm, though for HT roughing, staying around 8-10mm is ideal for tool life.
Absolutely. We provide only 100% original ZCC.CT products in factory-sealed boxes with serial numbers and anti-counterfeiting labels.
Heavy Machining Tip:
When using the HT chipbreaker for heavy roughing, do not hesitate to increase the feed rate (fz). If the feed is too low, the reinforced edge may "rub" rather than cut, causing premature heat buildup. This insert is designed to bite into the material.
Need Help With ZCC.CT Inserts?
Looking for a ZCC.CT equivalent, alternative grade, or sample catalog? Our CNC specialists have helped 50+ manufacturers in aerospace, automotive, and medical machining source the right tooling at 30–50% lower cost than OEM prices.
This ZCC.CT insert is in stock. 24-hour quote response. ISO 9001 certified. Ships from Hangzhou in 3–7 days.
Technical FAQ & Buying Guide
When choosing CNC cutting tools, check the full model code, dimensions, grade and selected variant before ordering. Do not rely on the product image alone.
For carbide inserts, tool holders, drills and end mills, compare the mounting dimensions, connection type and manufacturer's specifications with your holder or machine. If you are unsure, share your existing part number and machining application with us before ordering.
Check the product listing for the selling unit, pack quantity and included components. If it is unclear whether the price is per piece or per pack, or whether a tool body and inserts are sold separately, contact us before purchasing.
Select cutting speed, feed rate and depth of cut using the relevant manufacturer's recommendations for your tool model, workpiece material, machine conditions and coolant method. The same settings are not suitable for every product or application.
Our automatic quantity discount is 6% off for 2–9 items and 12% off for 10 or more items, based on the total product quantity in the cart. Other offers may not combine with this discount; check the applicable offer conditions.
According to our shipping policy, orders are typically processed and shipped within 1–3 business days after confirmation. Delivery generally takes 5–20 business days, depending on your destination and shipping method. Customs clearance or unforeseen delays may affect delivery times. A tracking number is sent by email after shipment.