BEYOND VDI Serrated Locking Blocks DIN 69880 | VDI 30/40/50 Clamping Blocks
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VDI Serrated Locking Blocks DIN 69880
Precision Clamping Components for CNC Tool Holders
Brand: BEYOND | Origin: China | Standard: DIN 69880 / ISO 10889
⚠️ TECHNICAL NOTE: Images are for display purposes. This product includes the Locking Block/Wedge only.
"What is the function of a VDI Serrated Locking Block?"
The BEYOND VDI Serrated Locking Block is a critical component for securing VDI tool holders within the CNC turret. Following the DIN 69880 standard, these blocks feature a precision-ground serrated surface that meshes perfectly with the tool holder shank. The S-type tightening mechanism ensures a high-clamping force, preventing axial movement and vibration during heavy-duty turning operations. Available for VDI sizes from 16 to 80, these blocks are essential for maintaining turret alignment and machining accuracy.
"How to identify the correct VDI Locking Block size?"
Turret Interface
Shank Dia (mm)
Wedge Type
Wedge Width
Standard Spec
"Why choose BEYOND Serrated Blocks over standard parts?"
- ✔ High-Tensile Steel: Manufactured from 20CrMnTi steel for maximum durability and resistance to thread stripping.
- ✔ Precision Ground Serrations: Ensures 100% surface contact with the tool holder shank to eliminate micro-vibrations.
- ✔ Anti-Corrosion Finish: Black oxide coating provides superior rust resistance in high-moisture coolant environments.
"Full size range for DIN 69880 Locking Blocks"
| Series Model | VDI Size | Wedge Width (mm) | Metric Equiv. | Imperial Equiv. |
|---|---|---|---|---|
| VDI16 / W-16 | VDI 16 | 16 mm | M16 | ~0.63" |
| VDI20 / W-18 | VDI 20 | 18 mm | M18 | ~0.71" |
| VDI30 / W-20 / W-22 / W-26 | VDI 30 | 20 - 26 mm | M20-M26 | ~1.18" Shank |
| VDI40 / W-28 / W-30 / W-40 | VDI 40 | 28 - 40 mm | M28-M40 | ~1.57" Shank |
| VDI50 / W-36 / W-50 / W-60 | VDI 50 | 36 - 60 mm | M36-M60 | ~1.96" Shank |
| VDI60 / W-42 | VDI 60 | 42 mm | M42 | ~2.36" Shank |
| VDI80 / W-50 | VDI 80 | 50 mm | M50 | ~3.15" Shank |
Clamping Torque Recommendations
VDI 30: 45 - 55 Nm
VDI 40: 80 - 100 Nm
VDI 50: 150 - 180 Nm
Installation Tip
Clean all serrations before installation. Lightly oil the thread and the wedge back-surface for smooth clamping action.
"Where are these locking blocks used?"
These are used exclusively on CNC Lathes equipped with VDI turrets. They serve as the mechanical interface that locks Static Holders (Turning, Boring, Facing) and Live Tool Holders into the turret disk.
"Which turrets are they compatible with?"
Fully compatible with all DIN 69880 / ISO 10889 standard turrets, including systems by Sauter, Duplomatic, Pragati, and major machine brands like Mazak, DMG Mori, and Haas (VDI versions).
"Why professionals trust BEYOND VDI components?"
Tool holder stability is the foundation of machining precision. At BEYOND, we specialize in technical CNC components. Our VDI locking blocks undergo rigorous hardness testing to ensure they won't deform under extreme industrial pressures.
Global Verified Customer Feedback
⭐⭐⭐⭐⭐ "The VDI40 W-28 fits perfectly in our Sauter turret. Very strong."
- Schmidt, Germany⭐⭐⭐⭐⭐ "Exactly as described. Serrations are sharp and hold well."
- Miller, USA⭐⭐⭐⭐ "Good value for money. Harder than the cheap ones I used before."
- Ricci, Italy⭐⭐⭐⭐⭐ "Fast shipping to UK. Solved our tool holder vibration issues."
- Thompson, UKFrequently Asked Questions
Q: Can I use these for VDI holders without serrations?
A: No. VDI tool holders must have the corresponding serrated shank for these blocks to function safely.
Q: Is the tightening screw included?
A: Yes, each locking block comes with the high-strength S-type clamping screw.
Q: What happens if I over-torque the block?
A: Over-torquing can lead to turret disk deformation or screw failure. Please follow our recommended torque settings.
Locking Block Material Choice
Keywords: VDI Serrated Locking Block, DIN 69880 Clamping Wedge, VDI 30 40 50 Tool Holder Lock, Sauter Turret Parts, CNC Lathe Spare Parts China.
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Technical FAQ & Buying Guide
Absolutely. Our CNC carbide inserts (including CNMG, WNMG, DNMG, and APMT series) are manufactured strictly adhering to international ISO/ANSI specifications. A CNMG 120408 from OYYU BEYOND will flawlessly fit any standard turning tool holder or indexable tool from major global brands like Sandvik Coromant, Kennametal, Iscar, Walter, or SECO, providing a highly cost-effective premium alternative without sacrificing tolerance or tool life.
We offer optimized CVD and PVD multi-layer coatings for different ISO material groups:
- For Carbon/Alloy Steel (ISO P): Choose our thick multi-layer CVD coated grades (e.g., Al2O3 + TiN). They provide exceptional crater wear resistance and thermal barriers during high-speed dry or wet roughing.
- For Stainless Steel (ISO M): Choose our nano-structured PVD coated grades with sharp, positive chipbreakers (like -TM or -MA). This combination prevents work hardening and effectively controls sticky chips.
The optimal cutting parameters vary depending on the workpiece hardness and operation type:
- For General Steel Turnings: Recommended cutting speed ($V_c$) ranges from 150 to 280 m/min, with a feed rate ($f$) of 0.15 to 0.45 mm/rev.
- For Stainless Steel Finishing: Recommended cutting speed ($V_c$) is 120 to 200 m/min, with a feed rate ($f$) of 0.10 to 0.25 mm/rev.Always adjust parameters based on early wear patterns: increase $V_c$ if built-up edge occurs, or reduce $V_c$ if severe flank wear is observed.
Yes, we support machine shops, distributors, and global buyers with tiered wholesale pricing and competitive volume discounts. We also provide OEM custom manufacturing solutions for tool holders and carbide inserts based on your technical drawings. Contact our team to request a quick B2B quotation.
We provide secure worldwide express shipping (via DHL, FedEx, and UPS) with specialized, vibration-proof industrial packaging to ensure tools arrive in perfect condition. In-stock items are dispatched within 24-48 hours, while custom or bulk orders typically have a stable lead time of 15-25 days.
All our cutting tools and tool holders are manufactured strictly in accordance with ISO 9001 and international industrial standards. Every batch undergoes 100% rigorous quality control testing using high-precision optical measuring equipment to ensure reliable tool life and stable performance in continuous mass production.