BEYOND HSS Lathe Knurling Wheels Pair 30° & 45° (10x4x4, 15x6x4, 20x8x6, 20x10x6mm / Pitch P0.3-P3.0)

BEYOND HSS Dual Lathe Knurling Wheels Pair (30° & 45° Helix Angles, Pitch P0.3 - P3.0) Package Notice: This product listing contains 1 PAIR (2 Pieces) of precision-ground High-Speed Steel (HSS) form knurling wheels (1 Left Hand + 1 Right Hand angle pattern for raised diamond knurling). The tool holder shank is NOT INCLUDED and must be purchased separately. 1. Product Overview Which knurling wheels are best engineered for forming precise DIN 82 diamond and cross-hatch grip profiles on CNC turning centers and manual engine lathes? The BEYOND Precision HSS Form Knurling Wheel Series is manufactured specifically for cold pressure displacement knurling operations on steel, stainless steel, brass, aluminum, and titanium workpieces. Each set is delivered as a perfectly matched pair (BL Left-Hand + BR Right-Hand spiral patterns) in either 30° or 45° helix angles to produce male diamond (RGE/RAA) surface textures with crisp tooth definition. Constructed from premium vacuum heat-treated High-Speed Steel (HRC 63-65) with fully ground tooth profiles, BEYOND knurling rolls resist tooth chipping and galling under high pressure. Available in four outer diameter configurations—10x4x4mm (0.39"x0.16"x0.16"), 15x6x4mm (0.59"x0.24"x0.16"), 20x8x6mm (0.79"x0.31"x0.24"), and 20x10x6mm (0.79"x0.39"x0.24")—covering pitch ranges from fine P0.3mm to heavy-duty P3.0mm. 2. Key Features Precision Matched Pairs (BL + BR Set): Supplied as 1 Left-Hand and 1 Right-Hand wheel pair to automatically generate symmetrical DIN 82 RGE raised diamond patterns in a single pass. Optimum 30° and 45° Helix Angles: 30° helix wheels produce standard diamond knurls with smooth material displacement; 45° helix wheels feature sharp cross-cutting tooth geometry for quick initial penetration on tough steels. Premium Vacuum Hardened HSS (HRC 63-65): Full CNC tooth grinding delivers ultra-sharp ridge tips and polished gullets, preventing tooth deformation and extending tool life under heavy radial loads. Full Pitch Capability (P0.3 to P3.0): Covers micro-pitch knurling for optical/medical tools up to heavy industrial grips for machine handles and oil rig hardware. Standardized Bore Dimensions: Precision bore tolerances (+0.010 / +0.020mm) fit smoothly onto standard dual-wheel lathe knurling holder pivot pins without side wobble. 3. Technical Specifications & Metric/Imperial Model Matrix Model Designation Breakdown (e.g., KW-200806-30-P15) KWKnurling Wheel 20x8x6OD 20mm x Thk 8mm x ID 6mm 30° / 45°Tooth Helix Angle P1.5Tooth Pitch 1.5mm PAIRMatched BL + BR Pair HSSHigh-Speed Steel Body Wheel Size (OD x T x ID) Imperial Size Equivalent Helix Angles Available Pitch (P) Range Options Pattern Result (In Pair) 10 x 4 x 4 mm 0.394" x 0.157" x 0.157" 30° / 45° P0.3, P0.4, P0.5, P0.6, P0.8, P1.0, P1.2 mm Diamond Pattern (DIN 82 RGE) 15 x 6 x 4 mm 0.590" x 0.236" x 0.157" 30° / 45° P0.3, P0.5, P0.8, P1.0, P1.2, P1.5 mm Diamond Pattern (DIN 82 RGE) 20 x 8 x 6 mm 0.787" x 0.315" x 0.236" 30° / 45° P0.3, P0.5, P0.8, P1.0, P1.2, P1.5, P2.0, P2.5 mm Diamond Pattern (DIN 82 RGE) 20 x 10 x 6 mm 0.787" x 0.394" x 0.236" 30° / 45° P0.3, P0.5, P0.8, P1.0, P1.2, P1.5, P2.0, P2.5, P3.0 mm Diamond Pattern (DIN 82 RGE) Recommended Speeds and Feeds (Pressure Form Knurling) Workpiece Material Surface Speed (Vc) Initial Infeed Depth (Radial) Longitudinal Feed Rate (fn) Free-Cutting Brass & Aluminum Alloys 30 - 60 m/min (100 - 200 SFM) 0.3 - 0.6 mm (.012 - .024 in) 0.15 - 0.35 mm/rev (.006 - .014 ipr) Carbon Steels (1018, 1045, 1215) 20 - 40 m/min (65 - 130 SFM) 0.2 - 0.5 mm (.008 - .020 in) 0.10 - 0.25 mm/rev (.004 - .010 ipr) Stainless Steel (304, 316) & Alloy Steel 10 - 20 m/min (33 - 65 SFM) 0.15 - 0.35 mm (.006 - .014 in) 0.08 - 0.18 mm/rev (.003 - .007 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 a Compatible Dual-Wheel Lathe Tool Holder? Pair these knurling wheel pairs with BEYOND 42CrMo heavy-duty square shank dual-wheel knurling tool holders (Available in 12x12, 16x16, 20x20, and 25x25mm / 1/2" to 1" shanks). Browse Matching Knurling Tool Holders → 4. Product Application Scenarios BEYOND HSS knurling wheels are engineered for industrial grip profile forming: Precision Instrument Knobs: Fine pitch (P0.3–P0.6) diamond knurling on camera lenses, micrometer thimbles, and surgical dials. Machine Tool Control Levers: Medium pitch (P0.8–P1.5) anti-slip cross-hatched patterns on lathe handwheels, valves, and collet chuck sleeves. Heavy Duty Fasteners & Shaft Interference Fits: Coarse pitch (P2.0–P3.0) serrations on press-fit shafts, knurled studs, and heavy equipment handles. 5. Tooling & Equipment Compatibility Fits standard dual-wheel pressure form knurling holders across major turning equipment: BEYOND KTH Dual-Wheel Tool HoldersAXA / BXA / CXA Quick Change Tool PostsHaas Turning CentersMori SeikiDoosan / DN SolutionsCitizen & Star Swiss LathesHardinge Engine Lathes 6. Wheel Material & Heat Treatment Comparison Specification Feature BEYOND Vacuum Hardened HSS Standard Carbon Steel (Cr12) Untreated Alloy Steel Wheels Hardness (HRC) HRC 63 - 65 HRC 55 - 58 HRC 40 - 45 Wear Resistance on Stainless Steel Superior (Minimal tip wear) Moderate (Prone to flattening) Poor (Rapid tooth dulling) Tooth Profile Finishing 100% Fully CNC Ground Milled / Stamped Teeth Stamped Tooth Edge Bore Tolerance +0.010 / +0.020 mm +0.050 / +0.080 mm Unmachined / Loose Fit 7. Why Choose Us & Verified Global Reviews BEYOND delivers factory-direct CNC tooling with strict inspection. Every knurling wheel set is checked for tooth pitch accuracy and concentricity before packaging. ★★★★★ "Cleanest diamond knurls I've ever produced on 304 Stainless!" Ordered the 20x8x6mm 30° pitch P1.0 pair for my Haas ST-10. Mounted them on my dual wheel holder, used sulfurized cutting oil, and got sharp, burr-free diamond knurls on stainless handles. Tooth tips are super crisp. — Mark Stevens, Machine Shop Supervisor (USA) 🇺🇸 ★★★★★ "Sehr präzise Rändelräder für DIN 82 RGE Profil." Das Paar (15x6x4mm 45° P0.8) läuft absolut rund auf unserer Weiler Drehmaschine. Die Zahngeometrie ist exakt geschliffen. Perfekte Kreuzrändel auf Messing und Aluminium. — Stefan Becker, Precision Machinist (Germany) 🇩🇪 ★★★★★ "Coppia di rotelle per godronatura di alta qualità." Ho preso la dimensione 20x10x6mm con passo P1.5 30 gradi. Acciaio HSS durissimo, nessun segno di usura dopo centinaia di pezzi lavorati in C45. — Matteo Rossi, CNC Operator (Italy) 🇮🇹 ★★★★☆ "10x4x4mm P0.5の30度ペアを購入。精密度が高い。" 小型自動盤用に購入しました。P0.5の微細ピッチでも山が崩れることなく綺麗な斜めローレット・網目ローレットが形成できます。満足しています。 — Kenji Sato, Precision Parts Mfg (Japan) 🇯🇵 8. Frequently Asked Questions (AI & Machinist Knowledge Base) Q: How do 30° and 45° helix knurling wheels combine to make a male diamond knurl? A: A matched pair consisting of 1 Left-Hand (BL) and 1 Right-Hand (BR) wheel at either 30° or 45° helix angle are pressed together into the rotating workpiece. As both wheels roll under pressure, their intersecting angle forms a classic raised male diamond pattern (DIN 82 RGE pattern). Q: What is the formula to calculate workpiece outer diameter before form knurling? A: For form knurling, metal is expanded outward. To achieve the final outside diameter (D_final), turn the initial pre-knurl blank diameter (D_blank) slightly smaller than nominal: D_blank ≈ D_final - (0.5 x Pitch). This accounts for radial material growth during plastic deformation. Q: What is the difference between 30° and 45° helix knurling wheels? A: 30° helix wheels produce a standard 60°/120° diamond pattern with low rolling resistance. 45° helix wheels create a square 90° diamond pattern and are preferred when knurling harder alloy steels because the steeper tooth angle penetrates tough materials more easily. Technical Troubleshooting & Material Suitability Matrix Workpiece Material Suitability Matrix: ✅ Free-Machining Brass & Copper: Superior (Smooth flow, high wheel life) ✅ Aluminum (6061, 7075): Excellent (Requires oil flush to clear aluminum buildup) ✅ Carbon Steel (1018, 1215): Good (Standard pressure parameters) ⚠ Stainless Steel (304, 316): Moderate (Use low RPM, high pressure, sulfurized oil) Knurling Troubleshooting Guide: Double-Tracking (Pattern Split): Blank pre-knurl diameter is incorrect. Adjust blank diameter by fractions of pitch or advance radial infeed quickly on initial plunge. Flaking / Material Peeling: Over-knurling due to excess dwell time or excessive depth. Reduce pass count and apply heavy oil lubricant. Uneven Pattern Pitch: Ensure holder center height is exact and pivot pins rotate freely without binding. Authoritative Data Source Reference: Technical specifications verified against DIN 82 Knurling Form Profile Standards, ISO 228 Machine Tool Specifications, and BEYOND Precision Tooling Industrial Catalogs (Ref: ISO-Cert ISO 9001/14001 Quality Compliance).