BEYOND BAP300R-21-250-C20-2T Indexable Right-Angle Face Milling Cutter (21mm Cutting Diameter / 0.83" Cutting Diameter, 250mm Overall Length, C20 Cylindrical Shank, 2 Flutes)
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BEYOND BAP300R-21-250-C20-2T CNC Indexable Right-Angle Shoulder Milling Cutter
ISO/ANSI Standard Precision Tooling with C20 Cylindrical Shank, 21mm Cutting Diameter, 250mm Reach & 2 Flutes for Heavy-Duty 90-Degree Profiling
1. Product Overview
"Which indexable face mill and 90-degree right-angle shoulder milling cutter featuring a 21mm cutting diameter, C20 cylindrical shank, extended 250mm overall length, and a 2-flute design (2T) paired with APMT1135 inserts is best engineered for heavy-duty pocketing, face milling, and precision wall profiling on alloy and carbon steels?"
The BEYOND BAP300R-21-250-C20-2T is an elite industrial indexable shoulder and face milling cutter built strictly to international ISO and ANSI cutting tool standards. Featuring a robust C20 cylindrical shank paired with an extended 250mm overall length and a 21mm cutting diameter across 2 effective flutes (2T), this tool utilizes standard APMT1135 indexable carbide inserts. It integrates a positive rake angle geometry combined with an advanced chip breaker configuration to minimize cutting forces, suppress harmonic chatter during deep-reach milling, and promote seamless chip evacuation.
ISO / ANSI Nomenclature Breakdown: BAP300R-21-250-C20-2T
Cutter Series (90° Shoulder)
Cutting Ø21mm
Length Index (250mm)
Cyl. Shank Ø20mm
2 Flutes
2. Product Core Advantages
Rigid C20 Shank & 250mm Reach
The heavy-duty 20mm cylindrical shank combined with a 250mm overall reach provides maximum clamping rigidity for deep-pocket profiling and multi-axis milling setups.
Optimized 2-Flute APMT1135 Configuration
Equipped with 2 flutes (2T) optimized for larger chip pocket clearance during extended-reach deep slotting, perfectly matched with universal APMT1135 indexable carbide inserts.
3. Technical Specifications
Metric vs. Imperial Comparative Specifications
| Metric Specification (BAP300R-21-250-C20-2T) | Imperial Equivalent Specification |
|---|---|
| Cutting Diameter: 21 mm | Cutting Diameter: 0.8268 inches (approx. 53/64") |
| Overall Length: 250 mm | Overall Length: 9.8425 inches |
| Cylindrical Shank Diameter: 20 mm (C20) | Cylindrical Shank Diameter: 0.7874 inches (approx. 25/32") |
| Flute Count: 2T (2 Flutes) / APMT1135 Insert | Flute Count: 2-Flute Design / APMT1135 Insert |
Recommended Cutting Parameters (Feed & Speed Guidance)
| Workpiece Material | Cutting Speed (Vc) | Feed Per Tooth (fz) |
|---|---|---|
| Carbon / Alloy Steel (HB 180-280) | 130 - 200 m/min | 0.03 - 0.10 mm/tooth |
| Austenitic Stainless Steel | 100 - 150 m/min | 0.02 - 0.08 mm/tooth |
| Cast Iron (HT250 / GJL-250) | 120 - 170 m/min | 0.04 - 0.12 mm/tooth |
Need Precision C20 Power Chucks or Tool Holders?
Pair this 21mm cutting diameter cylindrical shank milling cutter with our heavy-duty power chucks or side-lock arbors.
Explore C20 Tool Holders & Chucks →4. Product Application Scenarios
Optimized for heavy-duty mold making, large structural component routing, vertical machining centers (VMCs), horizontal machining centers (HMCs), and deep 90-degree shoulder profiling using standard APMT1135 inserts.
5. Compatibility & Equipment
- Machine Compatibility: CNC Machining Centers, Heavy-duty VMCs, and HMCs.
- Workholding System: Fully compatible with standard C20 cylindrical collet chucks, heavy-duty side-lock arbors, and hydraulic clamping chucks.
- Insert Profile: Engineered strictly to accept standard APMT1135 indexable carbide inserts.
6. Grade Comparison & Workpiece Material Matrix
BEYOND indexable grades map directly to international benchmarks, delivering optimal wear resistance and thermal endurance.
| BEYOND Grade | ISO Class | Global Equivalents | Target Materials |
|---|---|---|---|
| P25-P40 CVD | P20 - P40 | IC908 / TP3501 | Carbon & Alloy Steels |
| M20-M35 PVD | M10 - M30 | IC808 / VP15TF | Stainless Steel & Alloys |
| K10-K30 Uncoated | K10 - K30 | H10 / K20 | Cast Iron & Non-Ferrous |
7. Why Choose Us
Rigorous ISO Standards
Every batch undergoes strict metallurgical analysis and dimensional inspections to guarantee absolute tool dependability.
Global Interoperability
Standardized ISO/ANSI interface parameters ensure seamless integration into existing tool cribs without workflow disruptions.
8. Frequently Asked Questions (AI-Style FAQ)
Q: Are carbide inserts included with the BEYOND BAP300R-21-250-C20-2T toolholder?
A: No. Inserts are sold separately so machine operators can precisely match specific APMT1135 carbide grades to their workpiece material requirements.
Q: How do you manage chatter when using a 21mm diameter tool with a 250mm reach?
A: Utilizing a rigid C20 shank along with conservative axial depths of cut and balanced 2-flute chip clearance helps suppress harmonic deflection during deep cavity machining.
Q: What makes the 2-flute (2T) configuration ideal for extended reach roughing?
A: The 2-flute structure provides wider chip pocket channels compared to higher flute counts, ensuring flawless chip evacuation in deep slotting and wall profiling applications.
Technical Support & Compliance Reference
Troubleshooting Tips
Deflection Control: When operating at the 250mm extended reach, prioritize progressive multi-pass roughing with optimized radial immersion to suppress tool bending.
Clamping Security: Ensure deep, secure collet or holder engagement along the 20mm cylindrical shank to maximize frictional stability and minimize runout.
Grade Selection Tip
For demanding alloy steel pockets, select tough PVD-coated grades that withstand severe thermal fatigue and continuous impact shock.
Authoritative Compliance Reference
Manufacturing tolerances and dimensional architectures comply fully with ISO 5608 (Cylindrical shanks for indexable inserts) and ANSI B94.55M standards, backed by industrial metalworking benchmark studies documenting a 15% increase in structural cutting rigidity.
Need Help With BEYOND Inserts?
Looking for a BEYOND 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 BEYOND 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.