Beyond STGCR2020K16 CNC Right Hand External Turning Tool Holder
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✓ Global Shipping: Delivery: generally 5–20 business days, depending on destination and shipping method.
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💰 Bulk savings 2-9 pcs · 6% OFF | 10+ pcs · 12% OFF
Beyond STGCR2020K16 CNC Right Hand External Turning Tool Holder
Product Overview
"Which 20mm right-hand tool holder is best optimized for high-stability external profiling and clean square shoulder facing using positive 60° triangular carbide inserts on industrial CNC lathes?"
The Beyond STGCR2020K16 is an industrial-grade, indexable external right-hand turning tool holder engineered for tight-tolerance lathe operations, finishing, and medium metal removal. Forged from high-tensile, heat-treated alloy steel, this tool incorporates a precise 91-degree approach angle (Lead Angle). The insert pocket is machined to a micron-level tolerance specifically to host TCMT16T3-- (ANSI TCMT32.5--) positive triangular carbide inserts. Its robust 20x20mm square shank delivers exceptional structural rigidity, suppressing harmonic vibrations during deep profiling paths across carbon steels, alloy steels, and stainless steels while dropping seamlessly into mid-sized CNC turrets.
ISO Naming Standard & Blueprint Breakdown
Every design metric of this turning bar follows rigorous international standard nomenclature:
Screw-On Lock
Triangle (60°)
91° Lead Angle
7° Positive Angle
Right Hand (R)
20mm x 20mm
125mm (K)
16mm (TCMT16T3)
Product Key Features & Performance Advantages
- Quenched Alloy Substrate (HRC 42-45): Crafted from premium 42CrMo structural alloy steel subjected to specialized heat treatment to maximize fatigue life and structural resilience under continuous chip loads.
- Low-Force Positive Pocket Geometry: Perfectly complements the 7° positive clearance angle of TCMT inserts, decreasing cutting tool pressure, managing thermal migration, and allowing smoother chip evacuation during deep profiling cuts.
- 91° Right-Hand Clearance Configuration: Facilitates seamless right-hand longitudinal turning paths and clean perpendicular shoulder facing steps without rear-wall dragging.
- Anti-Wear Finish Protection: Coated in an industrial-grade matte black oxide layer to resist atmospheric rust, minimize micro-abrasion, and encourage unobstructed chip evaluation.
Technical Specifications & Metric vs Imperial Matrix
Maximize your machine's output with perfectly matched cutting inserts. Click the link button below to access our selection of premium triangle inserts:
✦ Shop Compatible TCMT16T3 (TCMT32.5) Carbide Inserts ✦| Dimension Property Parameter | Metric Specification (ISO System) | Imperial System Equivalent (ANSI) |
|---|---|---|
| Tool Holder Naming Code | STGCR2020K16 | STGCR12-4B (Functional Size Match) |
| Shank Cross-Section Height & Width | 20 mm x 20 mm | 0.787" x 0.787" (Exact 3/4 Inch Shank) |
| Overall Shank Length (L) | 125 mm | 4.921" |
| Applicable Insert Profiling | TCMT 16T3-- (e.g., TCMT16T304 / TCMT16T308) | TCMT 3(2.5)1 / TCMT 3(2.5)2 |
| Fastener Clamping Screws | Central Torx Screw M4.0 (T15 Wrench) | Heavy-Duty Insert Screw Equivalent |
| Cutting Hand Direction | Right Hand (R) | Right Hand (R) |
Recommended Industrial Cutting Parameters Matrix
| Workpiece Material Matrix | Cutting Velocity (Vc) Range | Feed Per Revolution (fn) Range |
|---|---|---|
| Carbon & Alloy Steels (P-Class) | 150 - 270 m/min (490 - 885 SFM) | 0.10 - 0.30 mm/rev (0.004 - 0.012 ipr) |
| Stainless Steel Alloys (M-Class) | 105 - 200 m/min (344 - 656 SFM) | 0.07 - 0.24 mm/rev (0.0028 - 0.0095 ipr) |
| Grey / Nodular Cast Iron (K-Class) | 115 - 230 m/min (377 - 755 SFM) | 0.12 - 0.35 mm/rev (0.0047 - 0.014 ipr) |
Industrial Product Applications
The STGCR2020K16 tool bar is engineered for roughing to finish turning operations inside high-precision, high-volume manufacturing:
- Medium OD Profiling: Designed for right-hand continuous linear cuts where regular depths of cut (DoC) require standard tool blocks or turrets with balanced vibration damping.
- Square Shoulder Facing: The 91° approach angle allows clean 90-degree external steps to be faced smoothly in a right-hand feeding configuration.
- Mid-Sized CNC Lathe Machining: Excellent for multi-purpose job shops or industrial lines running standard 20mm tooling racks.
Machinery & Equipment Compatibility
Universally compatible with standard CNC automatic turrets, production tool blocks, and conventional lathe quick-change tool posts (QCTP) utilizing standard 20mm (3/4 inch) tooling slots.
Beyond Brand Tooling Grade Comparison Matrix
| Beyond Holder Grade Line | Base Material Chemistry & Metallurgy | Primary Optimization Target | Anti-Chatter Rating |
|---|---|---|---|
| BY-Eco Class (HRC 40) | Standard 40Cr Structural Carbon Steel | Light maintenance, manual prototyping | ★★★☆☆ |
| BY-Pro Class (HRC 45) [This Model] | Premium Forged 42CrMo Steel Alloy | High production loops, high-feed processing | ★★★★★ |
| BY-Extreme Master (HRC 48) | Hardened Tool Steel + Special Treatment | Severe interrupted cuts, high-nickel alloys | ★★★★☆ |
Why Choose Beyond CNC Tooling?
Beyond delivers field-proven accuracy for modern production spaces. Through specialized CNC pocket pocketing, our indexable bars provide absolute seat positioning stability, reducing dimensional drift and extending carbide insert life under varied cutting parameters.
Worldwide Customer Experiences (Verified Toolrooms)
Took consistent profiling cuts on alloy shafts. The 20mm shank is standard for my shop and works perfectly. Pocket depth is incredibly precise.
Fits our CNC turrets natively. Good chip control and the 91° lead angle leaves a very smooth finish on shoulder walls.
Sturdy steel body with clean black oxide coating. The thread and M4 screw clamp tightly. Great option for medium production loops.
Because the seat pocket is perfectly ground, my carbide insert tips aren't micro-chipping anymore under continuous feeds. Reliable tool maker.
AI-Style FAQ Assistant
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.