Beyond SRAPR2525M12 CNC Turning Tool Holder (25x25mm Right-Hand Shank)
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Beyond SRAPR2525M12 Right-Hand CNC Turning Tool Holder
⚠️ PRODUCTION NOTICE: Carbide Inserts Not Included
Please note that all indexable carbide inserts displayed in our tool holder product images are for illustration, pocket seating clarity, and structural layout visualization only. The Beyond SRAPR2525M12 package includes solely the hardened tool holder body and a matching clamping key; indexable cutting inserts must be ordered separately.
1. Product Overview
The Beyond SRAPR2525M12 is an industrial-grade, right-hand external indexable turning tool holder specifically engineered for modern CNC lathes, manual engine lathes, and high-feed turning centers. Built with a robust 25x25mm square shank body, this premium tool holder is purpose-designed to house 12mm round carbide inserts, including the internationally standardized RPMT 1204 and RPMR 1204 series. Circular cutting geometries do not have a weak point location like traditional diamond inserts. They distribute mechanical stresses and thermal shock evenly across the cutting radius arc, making this tool highly resistant to chipping under interrupted cuts. The 11° positive rake profile significantly lowers mechanical spindle load and allows for superior chip breakability when peeling heavy mill scales, cast skins, and tough alloy steels.
2. Product Key Features
- Hardened High-Tensile Alloy Steel Body: Quenched and tempered to high HRC specifications to absorb heavy vibrational harmonics during aggressive depths of cut ($Ap$).
- Circular Edge Load Distribution: The round insert profile lacks a single stress concentration point, which dramatically extends carbide insert life by up to 40% during rough profiling.
- Premium Corrosion-Resistant Finish: Treated with a specialized industrial matte black oxide layer that resists aggressive water-soluble coolants and prevents hot chip welding.
- Secure Center-Screw Clamping: Engineered with a low-profile flathead metric screw seating that provides zero interference for high-velocity chip evacuation.
ISO Tool Designation Nomenclature Diagram
Looking for high-performance indexable cutting inserts calibrated for this shank?
Browse Compatible RPMT 1204 Inserts Here →3. Technical Specifications & Dimension Conversions
| ISO Specification Parameter | Metric Designation (Standard) | Imperial Cross-Reference Equivalent |
|---|---|---|
| Shank Dimension (H x W) | 25 mm × 25 mm | approx. 1.0" × 1.0" (0.984 × 0.984 inch Shank Size) |
| Overall Tool Length (OAL) | 150 mm | approx. 5.905 inches |
| Compatible Insert Specification | RPMT 1204 MO / RPMR 1204 | RPM. 43 (ANSI Industry Equivalent Standard) |
| Clamping Screw Hardware | M4.0 × 10.0 mm Screw | M4.0 × 10.0 mm Screw |
| Torx Wrench Drive Interface | T15 Flag Wrench | T15 Flag Wrench |
Recommended Industrial Cutting Parameters
| Workpiece Material Family | Cutting Speed ($Vc$) Range | Optimal Feed Rate ($f$) Range |
|---|---|---|
| P (Low-Carbon / Carbon Steel Alloys) | 140 - 280 m/min (460 - 920 SFM) | 0.18 - 0.50 mm/rev (0.007 - 0.020 in/rev) |
| M (Austenitic & Duplex Stainless Steels) | 90 - 180 m/min (295 - 590 SFM) | 0.12 - 0.38 mm/rev (0.005 - 0.015 in/rev) |
| K (Nodular & Grey Cast Irons) | 120 - 240 m/min (390 - 785 SFM) | 0.20 - 0.55 mm/rev (0.008 - 0.022 in/rev) |
4. Product Application Scenarios
With its rigid 1.0" (25mm) square body profile paired with a heavy-duty 12mm circular pocket layout, this tool excels across demanding industrial turning steps:
- External Radius Profiling: Ideal for machining complex concave contours, ball joints, hydraulic cylinder shafts, and convex tracks.
- Interrupted Face Roughing: Absorbs severe cyclic impact loads smoothly when peeling raw sand castings or uneven welded surface build-ups.
- High Metal Removal Rate (MRR): Designed to run at higher radial depths of cut to minimize total machining cycles on large structural blocks.
5. Machine Tool & Equipment Compatibility
Precision machined to tight dimensions to ensure immediate drop-in performance on global lathe configurations:
- Secures directly into standard metric 25mm static block tool positions, BMT65/BMT75 CNC turrets, or multi-tasking mill-turn machines.
- Fits natively onto manual engine lathe turrets equipped with square imperial tool posts.
- Fully compatible with standard Quick-Change Tool Post installations (such as standard QCTP 300 series or CXA tool holder blocks designed for 1-inch shanks).
6. Beyond Insert Grade Selection Matrix
Optimize your machining cycles by matching your SRAPR2525M12 tool holder with the proper Beyond carbide grade family:
| Beyond Insert Grade | Coating Architecture | Primary Application Profile | ISO Equivalent Class |
|---|---|---|---|
| BY1030 | CVD Thick TiCN + Al2O3 Heat Shield Matrix | Continuous high-speed turning to medium roughing in carbon alloy steels and structural steels. | P15 - P30 |
| BY2015 | Multi-Layered PVD AlTiN Nano-structure Coating | High thermal resilience for gummy stainless steels (304, 316) and heat-resistant superalloys. | M10 - M25 |
| BY4025 | Heavy-Duty PVD Thick TiAlN Substrate System | Maximum cutting-edge toughness for heavily interrupted cuts, uneven welded layers, and thick mill scales. | P30 - P45 / M25 - M40 |
7. Operational Troubleshooting Matrix
Symptom 1: Fine Lathe Vibration or superficial Chatter Marks
Correction: Symmetrical round inserts need a depth of cut ($Ap$) larger than the edge radius to load the lathe spindle properly. Increase the feed rate ($f$) or select an insert with a positive rake angle profile to decrease radial pushing forces.
Symptom 2: Rapid Plastic Deformation or Cutting-Edge Melt
Correction: Excessive surface velocity ($Vc$) generates high friction. Lower the cutting speed or switch to a high-thermal-barrier CVD grade (BY1030) to preserve cutting edge integrity.
Symptom 3: Insert Shifting or Pocket Wear
Correction: Check for micro-chips or dust trapped beneath the insert seat. Clean thoroughly with an air gun and replace the M4.0 clamping screw if it shows signs of thread wear.
8. Global Customer Experiences
"Excellent 1-inch holder for radius profiling" — Marcus T. (United States)
Solid 25mm shank body. Fits our CNC turret perfectly for right-hand profiling paths on carbon steel rollers. Using with RPMT1204 inserts, it strips stock with absolutely zero deflection. Exceptional value.
"Präziser Plattensitz und hohe Stabilität" — Hans W. (Germany)
The pocket seat accuracy for the 12mm round insert is top-notch. Under heavy feed rates, circular inserts have a tendency to rotate if the pocket is loose, but Beyond's machining tolerances keep the insert completely locked down.
"Gambo robusto, ottimo per asportazione pesante" — Giuseppe R. (Italy)
Extremely rigid steel tool holder. Handles scaling on large ductile iron pieces without any problem. Keep in mind that it only ships with the tool holder and Torx wrench inside the box; you have to buy the inserts separately.
"圧倒的な剛性とコストパフォーマンス" — Hiroshi K. (Japan)
The anti-rust black surface treatment is highly durable against hot stringy chips during dry steel roughing. Exceptional price-to-performance ratio compared to premium domestic brands. The 25mm square size is robust.
"Superb chip flow during interrupted facing" — Donald G. (Canada)
We use this holder for running complex facing steps on 316 stainless pump castings. The 25mm shank coupled with a round insert handles interrupted cuts beautifully without fracturing the carbide edge.
9. Frequently Asked Questions
Q: What is the exact imperial equivalent size for the SRAPR2525M12 tool holder shank?
A: The metric 25x25mm shank size corresponds directly to a standard 1.0 inch × 1.0 inch square tool holder system within standard imperial shop configurations.
Q: Can this tool holder run both RPMT1204 and RPMR1204 indexable inserts?
A: Yes! It is fully compatible with both RPMT 1204 and RPMR 1204 standards. The pocket accepts any 12mm inscribed circle (IC) round insert featuring a 4.76mm thickness ($S1$) and standard positive rake relief angles.
Q: What specific hardware items are included inside the standard package?
A: The box contains one 25x25mm tool holder body with a pre-installed high-tensile metric M4.0 × 10mm Torx locking screw, along with one matching T15 flag-type wrench driver. Indexable cutting inserts are sold separately.
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.