Buy SRACR2020K12 Metal Lathe Tool Holder | Reliable CNC Tooling Solution - BEYOND

BEYOND SRACR2020K12 External Turning Tool Holder, RCMT1204 Insert

$22.83 USD

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Description

BEYOND SRACR2020K12 Indexable Round Insert Turning Tool Holder

Product Overview

"Which tool holder is best for high-feed profile turning and heavy-duty copy machining?"

The SRACR2020K12 is the professional's choice for complex profile turning. Specifically designed to house RCMT12 (Round) inserts, this tool offers unmatched edge strength. Because the round insert geometry lacks weak points or sharp corners, it provides a superior surface finish and can withstand significantly higher feed rates. This makes it the ideal solution for large-radius contours, roughing operations, and precision copying.

Key Features

  • Round Edge Strength: RCMT inserts provide the strongest cutting edge available for interrupted cuts.
  • Multi-Directional Machining: Allows for versatile copy turning and profiling with 360-degree edge utilization.
  • Vibration Dampening: Forged from premium 40Cr alloy steel, heat-treated to HRC 42-45 for stability.
  • Precision Clamping: The screw-down mechanism ensures the round insert remains locked under high cutting forces.

Technical Specifications

Deciphering the Model: SRACR 2020 K 12

[S]: Screw Clamping | [R]: Round Insert Shape | [A]: 90° Approach Angle | [C]: 7° Relief Angle | [R]: Right Hand | [2020]: 20x20mm Shank | [K]: 125mm Length | [12]: Fits 12mm Round Insert

Parameter Metric (ISO) Imperial (ANSI)
Model SRACR 2020 K 12 SRACR 12-4R
Shank Dimensions 20 x 20 mm 0.787 x 0.787 in
Compatible Insert RCMT 1204 (Round) RCGT 43

Recommended Cutting Data for RCMT12

Workpiece Material Speed (Vc) Max Feed (f)
Alloy Steel (P) 160 - 280 m/min 0.20 - 0.55 mm/rev
Stainless Steel (M) 110 - 190 m/min 0.15 - 0.35 mm/rev

Applications & Device Compatibility

Engineered for high-performance copy turning, filleting, and radius machining on CNC turning centers. It is widely used in automotive manufacturing for processing axles and hydraulic components. Compatible with all standard 20mm tool posts.

Why Choose BEYOND?

BEYOND specializes in precision manufacturing tools that balance extreme durability with cost-efficiency. Our SRACR series utilizes an advanced anti-vibration shank design to extend tool life by up to 30% compared to standard holders.

Global Customer Experience

★★★★★
Mark T. (USA): "Solid holder for our Haas CNC. The RCMT seats perfectly and handles roughing with ease."
★★★★★
Dieter W. (Germany): "High-quality finish. Fast shipping to Europe. Excellent performance on alloy steels."
★★★★☆
Luca M. (Italy): "Very stable during profile turning. Great value for industrial production."
★★★★★
Sato Y. (Japan): "Highly precise. The screw clamping is very secure even under high heat."

Frequently Asked Questions

Q: Why choose a round insert over a square one?
A: Round inserts have no corners to chip, making them much stronger for heavy roughing and profiling complex radii.
Q: Are the screws and wrenches included?
A: Yes, every BEYOND tool holder includes the necessary mounting screw and wrench.
Q: Can I use this for aluminum machining?
A: Absolutely. Pair this holder with RCGT-type polished inserts for high-efficiency aluminum turning.

💡 Material Selection Tip: For Steel (P), we recommend BEYOND BYM25 grade. For Stainless Steel (M), use our B10 nano-coating for optimal heat resistance.

Technical FAQ & Buying Guide

Are your carbide inserts interchangeable with major brands like Sandvik, Iscar, or Kennametal?

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.

How do I choose the correct insert grade and chipbreaker for machining Stainless Steel (M) vs. Carbon Steel (P)?

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.
What are the recommended cutting speed (Vc) and feed rate (f) parameters to maximize tool life?

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.
Do you offer bulk discounts or wholesale pricing for machine shops and distributors?

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.

What is your international shipping policy and typical lead time for orders?

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.

How do you guarantee the quality and tolerance precision of your CNC tools?

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.