BEYOND MCBNL2020K12 Left-Hand External Turning Tool Holder - M-Type
✓ In Stock & Fast Dispatch: Order processing: typically 1–3 business days after confirmation.
✓ Global Shipping: Delivery: generally 5–20 business days, depending on destination and shipping method.
✓ Guaranteed Quality: Check model, dimensions and compatibility before ordering. | Direct Factory Outlet
✓ Technical Support: Need grade selection help? Contact Engineer
💰 Bulk savings 2-9 pcs · 6% OFF | 10+ pcs · 12% OFF
MCBNL2020K12
Professional Left-Hand M-Type External Turning Tool Holder
Brand: BEYOND | Origin: China | High-Rigidity Industrial Grade
⚠️ NOTICE: The tool holder includes all spare parts. Inserts (Blades) are NOT included.
Model Identification Guide
Clamping: Multi-lock
Shape: 80° Diamond
Approach: 75°
Clearance: 0°
Hand: Left Hand
20x20mm Shank
Length: 125mm
Insert: CNMG1204
Technical Specification & Spare Parts List
Detailed specifications for the MCBNR / MCBNL Series (All Sizes):
| Model Type (R/L) | Compatible Insert | Shank(hxb) | Shim | Pin | Clamp | Screw | Wrench |
|---|---|---|---|---|---|---|---|
| MCBNR/L 2020K12 | CNMG 1204xx | 20 x 20 | MC1204 | CTM617 | HL1813 | ML0625 | L3.0 |
| MCBNR/L 1616H12 2525M12 / 3232P12 |
16x16 / 25x25 / 32x32 | ||||||
| MCBNR/L 2525M16 / 3232P16 | CNMG 1606xx | 25x25 / 32x32 | MC1604 | CTM822 | HL2217 | ML0830 | L3.0/L4.0 |
| MCBNR/L 3232P19 | CNMG 1906xx | 32 x 32 | MC1904 | CTM1025 | HL2724 | ML1035 | L5.0 |
Cutting Data Recommendations
Carbon & Alloy Steel (P)
Cutting Speed (Vc): 160 - 280 m/min
Feed Rate (fz): 0.15 - 0.50 mm/r
Stainless Steel (M)
Cutting Speed (Vc): 120 - 210 m/min
Feed Rate (fz): 0.12 - 0.35 mm/r
Unit Reference & Shank Size Conversion
| Metric: 2020K12 (20mm) | Imperial Equivalent: 12-4C (3/4") | Metric: 1616H12 (16mm) | Imperial Equivalent: 10-4B (5/8") |
| Metric: 2525M12 (25mm) | Imperial Equivalent: 16-4D (1") | Metric: 3232P19 (32mm) | Imperial Equivalent: 20-4E (1-1/4") |
Global Verified Feedback
⭐⭐⭐⭐⭐ "The MCBNL2020K12 is extremely robust. Perfect for my left-hand turning operations. The 20mm shank is very stable." - Markus, Germany
⭐⭐⭐⭐⭐ "Fast shipping to UK. The M-type clamping is superior for heavy roughing. BEYOND quality is excellent." - Robert, UK
⭐⭐⭐⭐ "Good tool life and the accessories (shim, clamp) are high precision. Fits my CNMG inserts perfectly." - Jason, Canada
⭐⭐⭐⭐⭐ "Zero vibration at recommended feeds. Great value compared to big brands." - Liam, Australia
⭐⭐⭐⭐⭐ "The finish I get with this tool holder is impressive. Highly recommend the 20x20mm series." - S. Watanabe, Japan
Frequently Asked Questions (FAQ)
Q: What is the difference between MCBNR and MCBNL?
A: MCBNR is a Right-hand tool holder, while MCBNL is the Left-hand version. Both use the same 80° CNMG inserts.
Q: Is this holder suitable for internal boring?
A: No, this is an external turning tool holder. For internal work, please see our boring bar category.
Q: Does the holder come with a wrench?
A: Yes, all BEYOND tool holders include the appropriate wrenches and spare parts as listed in the technical table.
Industrial Clamping Guide:
Long-tail Search Keywords: MCBNL2020K12, CNC External Turning Tool, Left Hand Lathe Holder, CNMG12 Indexable Bar, BEYOND Tools China, 20mm Turning Shank.
© BEYOND Cutting Tools - Professional Industrial Machining Solutions.
Need Help With OYYU Champions League Inserts?
Looking for a OYYU Champions League 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 OYYU Champions League 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.