BEYOND SRACL1212H08 CNC External Turning Tool Holder - 12x12mm Left Hand
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BEYOND SRACL1212H08 External Turning Tool Holder
Precision 12mm Left-Hand Tooling for RCMT 0803 Profiling
Product Overview
"Which left-hand CNC tool holder is best for finishing complex profiles with round RCMT inserts on a small lathe?"
The BEYOND SRACL1212H08 is a professional-grade 12x12mm tool holder optimized for RCMT 0803 round inserts. Designed for left-hand external turning, the round geometry provides the highest edge strength available, making it the industry standard for contouring and radius turning. By utilizing round inserts, machinists can rotate the cutting edge multiple times, significantly reducing tooling costs compared to traditional rhombic shapes while maintaining superior surface finishes on stainless steel and alloys.
Key Features
High-Rigidity Alloy Steel
Forged from 40Cr steel and vacuum-quenched (HRC 42-45) to ensure maximum vibration dampening and tool life.
Multi-Edge Advantage
Round inserts provide an "infinite" number of indexed edges, allowing you to use every millimeter of the carbide circumference.
Precision S-Type Lock
The screw-down clamping system offers the most stable seat for profiling, preventing micro-vibrations during interrupted cuts.
Technical Specifications
| Parameter | Metric (ISO) | Imperial (ANSI) |
|---|---|---|
| Model Number | SRACL1212H08 | SRACL 08-3 |
| Shank Size | 12 x 12 mm | 0.47" x 0.47" |
| Overall Length | 100 mm | 3.94" |
| Compatible Insert | RCMT 0803 | RCMT 2.5 |
Cutting Recommendations:
| Material Group | Speed (Vc) | Feed Rate (fn) |
|---|---|---|
| Carbon Steel (P) | 150 - 280 m/min | 0.15 - 0.50 mm/rev |
| Stainless Steel (M) | 110 - 180 m/min | 0.12 - 0.40 mm/rev |
Applications
- Heavy roughing of turbine blades and rounded shafts.
- Semi-finishing with high stability requirements.
- Complex contour profiling in aerospace and automotive.
- Optimized for Steel, Stainless, and Heat-Resistant Alloys.
Compatibility
Fits 12mm CNC Turrets and Manual Lathe Quick Change Tool Posts (QCTP). Compatible with RCMT 0803 inserts from BEYOND, Sandvik, and Kennametal.
Verified Customer Feedback
"Perfect for Radius Turning"
James W., USA
Great tool for profiling. The 12mm shank is very sturdy for smaller lathe work.
"Qualität aus China"
Klaus M., Germany
BEYOND holders are always precise. The finish on the RCMT seat is perfect.
"Ottimo rapporto qualità-prezzo"
Luca F., Italy
Excellent price/quality ratio. Fast shipping to Europe. Holds inserts tight.
Machinist's Quick Help (FAQ)
Q: Why use a Round insert instead of a Diamond (CNMG/DNMG)?
A: Round inserts provide superior edge strength and better surface finishes for radius work. They are also more economical as the entire circumference can be used.
Q: Is this tool holder suitable for high-speed CNC applications?
A: Yes. The 40Cr alloy steel and precision S-type clamping are designed to handle high RPMs and rapid feed rates without vibration.
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.