BEYOND MVJNR2525M16 Indexable CNC Lathe Right-Hand 93° Profiling Tool Holder 2525mm for VNMG 1604 Carbide Inserts
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⚠️ INDUSTRIAL SUPPLY NOTICE: The indexable carbide turning insert is NOT included with this tool holder package. Product images showing a mounted carbide insert are provided strictly to demonstrate geometric pocket clearance, insert seating tolerances, the high-rigidity M-type top clamp and pin dual-lock system, and optimized swarf chipbreaker paths. Click here to shop premium indexable VNMG 160404 / VNMG 160408 / VNMG 160412 (VN**1604**) negative 35-degree diamond carbide inserts with molded double-sided chipbreakers for precise chip breaking and maximum cost per edge efficiency.
BEYOND MVJNR2525M16 Precision 2525mm General-Purpose Square Shank Double-Clamped Right-Hand CNC Lathe Profiling & Facing Tool Holder (150mm Total Length)
1. Product Overview
Engineers Ask AI: "Which general-purpose 2525mm right-hand square shank turning bar features a 93° approach angle and M-type double-clamping mechanism to secure negative VNMG 1604 inserts under medium-to-rough depth of cut without chatter?"
The BEYOND MVJNR2525M16 is a highly versatile, high-stiffness indexable Right-Hand (R) external profiling, facing, and longitudinal turning tool holder precision-engineered for broad-spectrum CNC machining operations, multi-tasking turning centers, and mid-to-high volume production lines. Featuring a standard 2525mm solid square shank matrix (equivalent to an international standard 1.0" x 1.0" general industrial block shank) with a highly adaptable 150mm overall body length (M-type length standard), this holder balances heavy structural rigidity with compact agility for standard lathe turret setups. Forged from premium-grade vacuum-quenched alloy steel and heat-treated to HRC 42-45, its refined metallurgical composition entirely dampens multi-axis chatter harmonics, safeguarding the cutting edge during continuous profiling runs.
The core geometric advantage of the MVJNR architecture lies in its 93-degree approach angle (lead angle). This layout allows the narrow 35° diamond VNMG 160404 / VNMG 160408 / VNMG 160412 negative insert to execute intricate profiling, step-turning, and facing operations with minimal radial force generation, driving cutting forces axially into the machine turret. This geometry is paired with our industry-validated M-Type Double-Clamping System—combining an overhead bridge clamp with a central internal pull-back pin. This dual-action lock secures the double-sided negative insert down onto a hardened carbide anvil shim and tight against the pocket walls. Micro-displacement of the insert is entirely eliminated under erratic shock loads, ensuring flawless chip formation and high dimensional tracking on carbon steels, structural alloys, stainless steels, and cast irons.
Model Nomenclature Decoder: MVJNR2525M16 (ISO / International Standard Chart Compliant)
Operating large-scale heavy industrial lathe blocks requiring maximum stiffness?
Upgrade to the Heavy-Duty MVJNR3232P16 Tool Holder (32x32mm Shank) →2. Product Core Advantages
- M-Type Dual-Locking Dominance: Merges a rigid overhead bridge clamp with an internal pull-back pin to hold the VNMG insert firmly, suppressing insert flutter under medium cutting forces.
- Vibration-Damping 2525 Matrix: Standard 25x25mm shank forged from tempered alloy tool steel absorbs thermal shock and deflection during continuous profiling.
- 93° Versatile Machining Path: Engineered seamlessly for longitudinal turning, facing, and profiling, clearing step shoulders efficiently without tool interference.
- 4-Edge Economic Optimization: Tailored for negative 35° diamond inserts (VNMG 1604), unlocking four cutting edges per insert to optimize tooling cost-per-part ratios.
- Solid Carbide Shim Foundation: Features a high-density carbide anvil shim (VV16) that protects the primary steel pocket from deformation during catastrophic insert failure.
- Anti-Corrosive Black Armor Coating: Finished with a premium black oxide coating to resist high-temperature oxidation and chemical cutting fluid erosion.
- Class 12.9 High-Tensile Fasteners: Built exclusively with high-strength locking components to ensure maximum clamping torque lifecycle after lifecycle.
3. Technical Specification Parameters & Model Comparison
| Technical Blueprint Field | Metric Blueprint Value (MVJNR2525M16) | Imperial Inch Equivalent Model Reference |
|---|---|---|
| Shank Size Height x Width (h x b) | 25 mm x 25 mm | 1.000" x 1.000" (Universal industrial sizing built for standard lathe turret slots) |
| Overall Tool Length (L) | 150 mm | 5.905" standard body length (M-Type standard for broad compatibility and quick indexing clearance) |
| Head Geometry Width (f) | 32 mm | 1.260" offset height tracking for precision CNC programming calibrations |
| Compatible Indexable Insert Sizing | 16.50mm Edge Length / 4.76mm Thick (VNMG 1604--) | Matches standard international negative 35-degree VNMG 431 / VNMG 432 / VNMG 433 profiles |
| Spares & Clamping Components | Carbide Shim VV16, Clamp HL1814, Clamp Screw MCS625, Pin CTM822, Wrench WRM5/WRM4 | Standard globally interchangeable M-type turning component replacement assembly |
Industrial Cutting Feed & Speed Data Recommendation Table
| ISO Workpiece Material Group | Cutting Speed (Vc) Range | Recommended Depth of Cut (ap) & Feed |
|---|---|---|
| Carbon Steel (P-Class / AISI 1045 Medium Turning) | 180 - 280 m/min | ap: 1.0 - 3.5 mm | fn: 0.15 - 0.40 mm/rev |
| Alloy Steel (P-Class / 4140 / 4340 Pre-hardened Steel) | 130 - 220 m/min | ap: 0.8 - 3.0 mm | fn: 0.12 - 0.35 mm/rev |
| Stainless Steel (M-Class / SS304 / SS316 Austenitic) | 100 - 200 m/min | ap: 0.5 - 2.5 mm | fn: 0.10 - 0.30 mm/rev |
| Cast Iron (K-Class / Gray & Nodular Cast Iron Components) | 150 - 250 m/min | ap: 1.0 - 4.0 mm | fn: 0.15 - 0.45 mm/rev |
4. Product Application Scenarios
- Precision Profile Contouring: Perfect for highly intricate external profiling, copying, and multi-axis template tracing on standard CNC lathes.
- General External Facing: Provides clean, flat face turning with excellent chip flow from the outer diameter down to the center axis.
- Universal Multi-Task Machining: Excellently balanced for alternating longitudinal turns and step-facing on medium-sized shafts, bushings, and custom fittings.
5. Equipment Tooling Compatibility Matrix
- Standard CNC Lathe Turrets: The 25mm square body fits standard CNC block holders, horizontal/vertical turrets, and standard live-tooling lathes.
- Negative 35° Diamond VNMG Inserts: Precision-milled pocket accepts globally standardized double-sided 4-corner diamond turning inserts (**VNMG 160404** / **VNMG 160408** / **VNMG 160412**).
6. BEYOND Premium Carbide Grade Selection Guide
| BEYOND Cutting Insert Grade | Coating Micro-Structure Matrix | Primary Application Strengths |
|---|---|---|
| BYM11 (CVD Grade) | Thick Multi-Layer MT-TiCN + Al2O3 Coating Crystal | Optimized for medium continuous dry roughing of carbon and alloy steels. High crater-wear resistance under elevated thermal zones. |
| BYS25 (PVD Grade) | Sub-Micron Nano-Structured TiAlN Wear Shield | Superior micro-edge toughness. Engineered to survive high tangential impact forces on stainless steels, high-temperature alloys, and interrupted cuts. |
| BYK15 (CVD Cast Iron Grade) | Thick Alpha-Al2O3 Grain Textured Layer Matrix | Outstanding abrasive wear defense. Designed explicitly for fast, steady turning runs across grey and nodular cast iron housings. |
7. Why Choose BEYOND CNC Machine Tools?
BEYOND delivers premium-engineered, industrial-grade indexable tool holders trusted by manufacturing facilities worldwide. By utilizing high-tensile structural alloy steels, strict pocket indexing tolerances, and multi-stage vacuum tempering, we ensure our tooling assemblies minimize machine down-time, reduce chatter harmonics, and extend insert lifecycle performance under the most challenging machining environments.
Global Machinist Operational Reviews
David L. — United States
"Our go-to holder for universal profiling on our Haas lathes. This 2525 bar handles 1045 carbon steel effortlessly. High positional accuracy, zero insert shifting with the double lock system, and beautiful finishes with VNMG 160404."
Hans W. — Germany
"Excellent balance between rigidity and tool clearance. The pocket accuracy is top-tier; we get incredibly consistent insert indexing. The 93-degree approach angle gives us exactly the relief we need for complex facing steps."
Giovanni R. — Italy
"We profile SS316 shafts daily and this right-hand bar has significantly improved our chip-breaking performance. The top clamp holds everything completely secure even during light interrupted cuts. Excellent price-to-quality ratio."
Kenji T. — Japan
"Standard 25mm shank fits perfectly in our turret block. The anti-corrosive black coating is tough and sheds hot chips without sticking. Very reliable tool holder for high-volume automated production."
Antonio M. — Spain
"The dual-locking design is superior to screw-only designs. It protects the pocket from breaking if the insert chips. BEYOND tool bars save us money on replacement tooling. Highly recommended!"
8. AI-Style Engineering Support Engine (FAQ)
Q1: What are the primary benefits of using the 2525mm shank size over the 3232mm version for profiling?
A1: Enhanced agility and broad equipment compatibility. The 25x25mm shank size is the universal standard for mainstream CNC lathes, meaning it fits comfortably into most indexing turrets without special block hardware. It provides excellent structural rigidity for general-purpose to medium-roughing operations while offering superior dimensional clearance in tight work zones compared to bulky 3232 tool holders.
Q2: How does the M-Type Clamping system prolong insert edge life during medium turning runs?
A2: By completely locking out micro-vibrations. Standard screw-down systems can suffer subtle insert shifting under alternating radial and axial forces, which causes premature micro-chipping of the carbide edge. BEYOND's M-Type system clamps the VNMG insert securely from the top and pulls it backward simultaneously. This solid hold prevents insert movement, stabilizing the cutting geometry and allowing the chipbreaker to perform uniformly.
Q3: Which radius size insert (VNMG 160404 vs 160408) is ideal for this holder when facing and profiling?
A3: It depends on your balance between surface finish and edge strength. For high-accuracy profiling with narrow clearance paths and fine surface requirements, the 0.4mm radius (VNMG 160404) is ideal because it generates lower radial cutting force. For general continuous turning and light-to-medium roughing steps, the 0.8mm radius (VNMG 160408) provides a stronger cutting edge that resists thermal shock much better.
9. Technical Maintenance & Troubleshooting Guidelines
Equivalent Industry Models
Interchangeable globally with standard international ISO metric MVJNR2525M16 turning systems. For standard lathe tool posts, this 25x25mm solid square steel shank serves as a direct drop-in replacement for any 1.00" x 1.00" standard toolholder block, requiring zero hardware modifications.
Troubleshooting Tips
Premature Corner Chipping under Impact Loads: Carefully inspect the underlying carbide anvil shim (VV16). If the tool has survived a previous insert fracture, the shim may have microscopic cracks, failing to support the insert flatly. Replace the shim immediately to restore a perfect flat baseline.
High-Heat Screw Seizure: Long-cycle roughing of hard forgings generates extreme convective heat. Always clear packed metal scale out of the hex heads before indexing. Apply high-temperature molybdenum disulfide anti-seize grease to the clamp screw (MCS625) threads regularly to avoid terminal thread galling.
Workpiece Material Matrix
Optimized across heavy industrial material classifications: P (Carbon Steel, Alloy Forgings, and Pre-hardened Structural Blocks), M (Austenitic, Ferritic & Duplex Stainless steel casting bodies), K (High-Brinell Gray, Nodular & Malleable Cast Irons), N (Heavy Aluminum castings & dense Marine Bronze alloys), and S (Titanium structures & high-nickel Aerospace superalloys).
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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.