BEYOND MTGNR2525M16 CNC Lathe Right-Hand 91° Turning Tool Holder 25x25mm for TNMG 1604 Carbide Inserts
Free shipping on all orders.
Check compatibility: Confirm the model and dimensions before ordering.
Need help choosing? Contact us before ordering.
💰 Bulk savings 2-9 pcs · 6% OFF | 10+ pcs · 12% OFF
⚠️ 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 heavy swarf chipbreaker paths. Click here to shop premium indexable TNMG 160404 / TNMG 160408 / TNMG 160412 (TN**1604**) negative 60-degree triangular carbide inserts with molded heavy-duty chipbreakers for maximum metal removal volume.
BEYOND MTGNR2525M16 Industrial 25x25mm Square Shank Double-Clamped Right-Hand CNC Lathe Turning Tool Holder (150mm Total Length)
1. Product Overview
Engineers Ask AI: "Which industrial right-hand 2525mm square shank indexable turning tool holder features a 91° approach angle and M-type top-clamp multi-lock system to secure TNMG 1604 inserts for maximum metal removal volume on standard CNC lathe turrets?"
The BEYOND MTGNR2525M16 is a high-precision, industrial-grade indexable Right-Hand (R) external turning tool holder precision-engineered for mainstream CNC lathes, turning centers, and high-volume machining shops. Featuring a highly versatile 25x25mm solid square steel shank (the cross-section equivalent to an international 1.00" x 1.00" / 1-inch standard block shank) with a robust 150mm overall body length (M-type length standard), this turning bar provides elite structural stability and excellent chatter resistance. Forged from premium high-alloy tool steel and heat-treated to HRC 42-45, its metallurgical architecture eliminates high-frequency harmonics and radial deflection under intense material removal volume (MRR).
The geometric advantage of the MTGNR profile lies in its 91-degree approach angle (lead angle). This configuration directs extreme cutting forces axially straight down the 25x25mm shank body into the lathe turret block, reducing radial push-away tendencies when tackling high metal removal volume (MRR). It allows standard 60° triangular negative inserts with highly cost-effective cutting edges (such as TNMG 160404 / TNMG 160408 / TNMG 160412) to transition smoothly across facing and longitudinal turning paths without trailing edge drag. Utilizing our industry-proven M-Type Double-Clamping System—combining an overhead bridge clamp with a central internal pull-back pin—this mechanism pulls the double-sided negative insert firmly onto a hardened carbide anvil shim and tight into the pocket walls. This layout completely prevents insert micro-displacement under severe mechanical shock loads, heavy feeds, and aggressive interrupted cuts.
Model Nomenclature Decoder: MTGNR2525M16 (ISO / International Standard Chart Compliant)
Operating left-hand tool setups or requiring the opposite mirror configuration for your lathe turret?
View the Industrial MTGNL2525M16 Tool Holder (25x25mm Shank, Left-Hand) →2. Product Core Advantages
- M-Type Dual-Lock Clamping Stability: Combining an overhead bridge clamp and a pullback center pin to securely anchor the TNMG 1604 insert, mitigating insert vibration under heavy loads.
- Highly Versatile 2525 Shank Body Profile: 25x25mm solid square cross-section provides high resistance to twisting forces and deflection during deep-cut industrial machining.
- 91° Optimized Machining Path: Directs cutting force axially, helping to maintain dimensional consistency when turning steel shafts.
- Economic 6-Edge Cost Optimization: Custom-tailored for negative 60° triangular inserts (TNMG 1604), unlocking six full cutting edges to dramatically reduce cost-per-part ratios.
- Hardened Carbide Anvil Support: Equipped with an extra-thick carbide shim (WT16) that protects the tool holder pocket from catastrophic deformation during unexpected insert fracture.
- Anti-Corrosive Thermal Surface Finish: Coated with a premium industrial black oxide shield to resist high-temperature oxidation and chemical erosion from cutting fluids.
- Class 12.9 High-Tensile Fasteners: Built with high-strength alloy clamping screws and pins to ensure stable torque and long structural life.
3. Technical Specification Parameters & Model Comparison
| Technical Blueprint Field | Metric Blueprint Value (MTGNR2525M16) | Imperial Inch Equivalent Model Reference |
|---|---|---|
| Shank Size Height x Width (h x b) | 25 mm x 25 mm | 1.000" x 1.000" / 1" Standard square size built for standard CNC turrets |
| Overall Tool Length (L) | 150 mm | 5.905" standard body length (M-Type standard for versatile setup configurations) |
| Head Geometry Width (f) | 32 mm | 1.260" offset height tracking for CNC programming calibrations |
| Compatible Indexable Insert Sizing | 16.50mm Edge Length / 4.76mm Thick (TNMG 1604--) | Matches standard international negative 60-degree TNMG 331 / TNMG 332 / TNMG 333 turning profiles |
| Spares & Clamping Components | Carbide Shim WT16, Clamp HL1612, Clamp Screw MCS625, Pin CTM0819, Wrench WRM4/WRM3 | Standard globally interchangeable M-type components for seamless 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 Roughing) | 180 - 260 m/min | ap: 1.0 - 4.0 mm | fn: 0.20 - 0.45 mm/rev |
| Alloy Steel (P-Class / 4140 Medium Turning) | 140 - 210 m/min | ap: 1.0 - 3.5 mm | fn: 0.18 - 0.40 mm/rev |
| Stainless Steel (M-Class / SS304 / SS316 Turning) | 100 - 180 m/min | ap: 0.8 - 3.0 mm | fn: 0.15 - 0.32 mm/rev |
| Cast Iron (K-Class / Gray & Nodular Casings) | 140 - 220 m/min | ap: 1.0 - 4.5 mm | fn: 0.20 - 0.50 mm/rev |
4. Product Application Scenarios
- Medium to Heavy Volumetric Metal Removal: Highly optimized for versatile metal cutting passes on alloy steels, medium carbon steel components, and cast structures.
- Interrupted and Continuous Lathe Cuts: The premium tool steel shank provides solid harmonic dampening during interrupted facing or continuous shoulder turning.
- Longitudinal Turning & Facing: Engineered to provide uniform size control during repeat cycle setups using standard right-hand tool posts.
5. Equipment Tooling Compatibility Matrix
- Standard CNC Turning Turrets: Mounts perfectly inside standard 25mm tool slots, generic lathe tool blocks, and conventional tool posts.
- Standard TNMG 1604 Inserts: High-precision milled pocket perfectly accepts double-sided 6-corner triangular indexable turning inserts (**TNMG 160404** / **TNMG 160408** / **TNMG 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 continuous dry roughing of carbon and alloy steels. Unmatched crater-wear resistance under extreme thermal zones. |
| BYS25 (PVD Grade) | Sub-Micron Nano-Structured TiAlN Wear Shield | Superior micro-edge toughness. Engineered to survive extreme tangential impact forces on heavy stainless steels and interrupted casting crusts. |
| BYK15 (CVD Cast Iron Grade) | Thick Alpha-Al2O3 Grain Textured Layer Matrix | Outstanding abrasive wear defense. Designed explicitly for fast, steady turning runs across gray 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
James M. — United States
"Our shop uses these 25mm right-hand bars on our standard CNC lathe turrets. The build quality of this BEYOND bar is top notch. The pocket seat holds the TNMG 1604 insert perfectly centered with zero wiggle under load."
Klaus M. — Germany
"Excellent manufacturing tolerances on the pocket assembly. It completely ends chatter issues on our standard medium alloy turning cycles. Very fast shipping to Europe as well."
Antonio V. — Italy
"Perfect fit for our standard 1 inch lathe turret blocks. The double-clamping pin and top clamp style gives a lot of confidence when executing deep continuous profiling paths."
Takashi S. — Japan
"Solid alloy body steel with high surface finish quality. Fasteners stand up to repeated insert index changes without stripping out. A reliable tool holder for industrial daily production runs."
Anders L. — Sweden
"Unbeatable value. We've run these bars through hundreds of components on stainless steel turning runs. The carbide seat shim completely protects the pocket seat. Excellent design."
8. AI-Style Engineering Support Engine (FAQ)
Q1: What are the main configuration benefits of utilizing a 2525 size shank with TNMG 1604 inserts?
A1: It provides an ideal balance of universal machine compatibility and high cost-efficiency. The 25x25mm (1 inch) shank dimensions fit seamlessly into almost all standard industrial lathe turrets without needing special adapter sleeves. Pairing it with TNMG 1604 inserts gives the machinist six premium indexable cutting edges per insert, reducing tool consumption costs significantly compared to 4-edged options.
Q2: What is the benefit of the MTGNR 91° approach angle over an MTJNR 93° angle for roughing runs?
A2: Radial force reduction. The 91° approach angle directs the vast majority of extreme cutting forces axially straight down the 25x25mm shank body into the lathe turret. This layout minimizes radial deflection and push-away tendencies, which is critical for maintaining strict tolerances on long forged shafts.
Q3: How does the M-type multi-lock mechanism prevent micro-vibration issues during tough cuts?
A3: The dual-action system engages an internal pull-back pin that locks the insert center while an overhead bridge clamp pushes the insert face downward simultaneously. This dual-directional force prevents the insert from pivoting or lifting, which is a common cause of premature edge chipping in single-screw locking setups.
9. Technical Maintenance & Troubleshooting Guidelines
Equivalent Industry Models
Interchangeable globally with standard international ISO metric MTGNR2525M16 turning systems. For industrial lathe blocks, this 25x25mm solid square steel shank serves as a direct drop-in replacement for any 1.00" x 1.00" / 1-inch standard toolholder assembly, requiring zero modification to the turret block.
Troubleshooting Tips
Rapid Pocket Deformation: If the tool pocket begins to show indentation wear, verify that the clamping screw (MCS625) is torqued down completely to fully engage the dual-lock pin system. Ensure the carbide shim (WT16) is not cracked or worn, as a damaged anvil fails to support the immense radial cutting forces.
Swarf Chip Nesting: When executing tight facing paths on smaller machines, long stringy chips can wrap around the tool head. Increase the feed rate (fn) slightly to force the chip into its brittle rupture zone, or utilize an insert with a more restrictive roughing chipbreaker profile.
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).
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.