BEYOND Dual-Wheel CNC Lathe Knurling Tool Holder (12x12, 16x16, 20x20, 25x25mm / 1/2", 5/8", 3/4", 1" Shank)
✓ In Stock & Fast Dispatch: Ships within 24–48 Hours from China
✓ Global Shipping: Express 3–10 Days | Standard 5–15 Days
✓ Guaranteed Quality: 100% Compatibility | Direct Factory Outlet
✓ Technical Support: Need grade selection help? Contact Engineer
BEYOND Dual-Wheel CNC Lathe Knurling Tool Holder (12x12mm, 16x16mm, 20x20mm, 25x25mm Square Shanks)
1. Product Overview
Which lathe tool holder is best engineered for producing precise cross-hatch, diamond, and straight knurled patterns on manual engine lathes and CNC turning centers?
The BEYOND Dual-Wheel Form Knurling Tool Holder Series (Models: KTH-1212, KTH-1616, KTH-2020, KTH-2525) is a heavy-duty line of square shank pressure knurling tool holders engineered for high-rigidity outer diameter (OD) knurling on CNC turning centers, automatic lathes, and conventional engine lathes. Available in standard shank dimensions of 12x12mm (1/2"), 16x16mm (5/8"), 20x20mm (3/4"), and 25x25mm (1"), these holders feature center-height aligned geometry to accommodate dual form knurling wheels without radial chatter or tool deflection.
Forged from high-tensile 42CrMo alloy steel, precision heat-treated to HRC 42-45, and finished with a anti-corrosive black oxide layer, the BEYOND double-wheel holder absorbs high radial cold-forming displacement forces. Equipped with hardened alloy steel pivot pins, it supports standard metric form knurling wheels (10x4x4mm, 15x6x4mm, 20x8x6mm, and 20x10x6mm) to ensure uniform pattern depth across long workpiece lengths.
2. Key Features
- Rigid Dual-Wheel Pressure Form Configuration: Designed to mount two opposing or angled knurling wheels to form straight (AA) or 30°/45° diamond (BL/BR) profiles through non-cutting metal plastic displacement.
- Precision Center-Height Alignment: Ground shank reference surfaces ensure the double-wheel pivoting head aligns perfectly with the machine spindle centerline, preventing tapered knurl profiles.
- 42CrMo Forged Alloy Steel Construction: Heat-treated body offers high yield strength and tensile rigidity, resisting flex under heavy radial loads during deep knurling passes.
- Comprehensive Square Shank Range (12mm to 25mm): Direct drop-in fit for quick-change tool posts (AXA, BXA, CXA), gang tool slides, and CNC turret holders across compact and heavy-duty lathes.
- Hardened Alloy Pivot Pins & Set Screws: Wear-resistant pin design reduces friction on internal wheel bores, extending knurling wheel service life and ensuring smooth rotation.
3. Technical Specifications & Metric/Imperial Model Matrix
Model Designation Breakdown (e.g., KTH-2020-D)
| BEYOND Model | Metric Shank Size (H x W) | Imperial Equivalent | Overall Length (L) | Compatible Wheel Sizes (OD x T x ID) |
|---|---|---|---|---|
| KTH-1212-D | 12.00 x 12.00 mm | 0.500 x 0.500 in (1/2" x 1/2") | 100 mm (3.937") | 10 x 4 x 4 mm / 15 x 6 x 4 mm |
| KTH-1616-D | 16.00 x 16.00 mm | 0.625 x 0.625 in (5/8" x 5/8") | 110 mm (4.331") | 15 x 6 x 4 mm / 20 x 8 x 6 mm |
| KTH-2020-D | 20.00 x 20.00 mm | 0.750 x 0.750 in (3/4" x 3/4") | 130 mm (5.118") | 20 x 8 x 6 mm / 20 x 10 x 6 mm |
| KTH-2525-D | 25.00 x 25.00 mm | 1.000 x 1.000 in (1" x 1") | 150 mm (5.905") | 20 x 8 x 6 mm / 20 x 10 x 6 mm |
Recommended Speeds and Feeds (Pressure Form Knurling)
| Workpiece Material | Surface Speed (Vc) | Initial Radial Infeed | Longitudinal Feed (fn) |
|---|---|---|---|
| Low Carbon Steel (1018, 1020) & Free-Cutting Brass | 25 - 45 m/min (80 - 150 SFM) | 0.3 - 0.6 mm (.012 - .024 in) | 0.15 - 0.35 mm/rev (.006 - .014 ipr) |
| Alloy Steel (4140, 4340) & Ductile Cast Iron | 15 - 30 m/min (50 - 100 SFM) | 0.2 - 0.5 mm (.008 - .020 in) | 0.10 - 0.25 mm/rev (.004 - .010 ipr) |
| Austenitic Stainless Steel (304, 316) | 12 - 22 m/min (40 - 72 SFM) | 0.2 - 0.4 mm (.008 - .016 in) | 0.08 - 0.20 mm/rev (.003 - .008 ipr) |
Need Precise Speed and Feed Calculations for Your Turning Operations?
Compute precise spindle RPMs, surface speeds (SFM/m/min), and feed rates for turning, grooving, and knurling operations with our interactive calculator.
Open Interactive Speeds and Feeds Calculator →Need Compatible Knurling Wheels?
Pair this tool holder with BEYOND HSS / Carbide high-precision form knurling wheels available in straight (AA) and spiral (BL/BR) patterns in sizes 10x4x4, 15x6x4, 20x8x6, and 20x10x6mm.
Browse High-Precision Knurling Wheels →4. Product Application Scenarios
The BEYOND dual-wheel form knurling tool holder is engineered for industrial grip pattern generation:
- Tool Handles & Control Knobs: Producing anti-slip diamond grip surfaces on handwheels, surgical tool handles, and machine adjustment levers.
- Industrial Fasteners & Pins: Forming straight or cross-hatched serrations on press-fit shafts, knurled thumb screws, and cylindrical inserts.
- Automotive & Mechanical Shafts: Press-fit shaft conditioning for mechanical interference fits in brass, aluminum, and mild steel components.
5. Tooling & Equipment Compatibility
Standard square shanks (12x12 to 25x25mm / 1/2" to 1") mount directly into quick-change tool posts (AXA, BXA, CXA), turret tool holders, and Swiss-type lathes:
AXA / BXA / CXA Quick Change Tool PostsHaas CNC LathesMori SeikiDoosan / DN SolutionsMazakCitizen SwissHardinge Manual Lathes
6. Holder Material & Process Comparison
| Tool Holder Specification | BEYOND 42CrMo Forged Body | Standard Carbon Steel Holder | Cast Iron Knurler Body |
|---|---|---|---|
| Tensile Strength / Yield | High (1080 MPa) | Medium (600 MPa) | Low (250 MPa) |
| Heat Treatment Hardness | HRC 42 - 45 Quenched & Tempered | HRC 20 - 25 Non-hardened | Un-hardened |
| Deflection Resistance under Load | Superior (Zero Flex under 5kN) | Moderate (Prone to bending) | Poor (Risk of brittle fracture) |
| Corrosion Protection | Black Oxide Chemical Coating | Basic Painting / Bare Steel | Bare Uncoated Surface |
7. Why Choose Us & Verified Global Reviews
BEYOND delivers factory-direct CNC tooling with strict QA inspection. Each tool holder is dimensional-checked for shank parallelism and pin alignment before shipment.
"Sturdy 20x20mm (3/4") shank holder for my Haas ST-20!"
The center height alignment on this 20x20 holder is spot on. Slapped in a pair of 20x8x6mm 30-degree wheels and produced crisp diamond knurls on 6061 aluminum and 1018 steel. Zero deflection.
— Dave Miller, Machine Shop Owner (USA) 🇺🇸
"Sehr solide Verarbeitung und präzise Stiftführung."
Habe die 16x16mm Version für unsere Weiler Drehmaschine gekauft. Der Halter aus 42CrMo biegt sich auch bei starkem radialem Druck nicht durch. Die Rändelräder laufen seidenweich.
— Klaus Riedel, Production Supervisor (Germany) 🇩🇪
"Ottimo porta utensile per godronatura su tornio CNC."
Struttura molto robusta e finitura brunita ottima. Abbiamo preso la misura 25x25mm per lavorazioni gravose. Godronatura incrociata perfetta su alberi in acciaio.
— Andrea Conti, Senior Turner (Italy) 🇮🇹
"12x12mmサイズは小型卓上旋盤に最適。"
小型CNC旋盤用に12x12mmを購入しました。剛性が高く、芯高も正しく合っています。真鍮およびアルミ材でのローレット形成時もビビリなく良好です。
— Hiroshi Tanaka, Manufacturing Lead (Japan) 🇯🇵
8. Frequently Asked Questions (AI & Machinist Knowledge Base)
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
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.