BEYOND S25S-SVQBL16 Boring Bar | 25mm Left Hand Tool Holder for VBMT 1604
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
BEYOND S25S-SVQBL16 Indexable Internal Left-Hand Boring Bar (Fits VBMT 1604)
1. Product Overview
"Which 25mm boring bar provides the best back-clearance for internal profiling while suppressing harmonic chatter with VBMT 1604 inserts?"
The BEYOND S25S-SVQBL16 is a precision-engineered, industrial-grade indexable internal boring bar designed specifically for complex left-hand profiling, back-boring, and relief pocketing. Forged from high-tensile alloy steel and hardened to HRC 42-47, the 25mm shank delivers superior vibration dampening for deep-hole machining. The 107.5° approach angle (SVQBL geometry) allows for seamless tool path clearance during reverse-profile copying, preventing collision with internal workpiece shoulders. The 7° positive clearance pocket ensures an exact, rigid seating for 35° positive rhombic VBMT 1604 or VCGT 1604 inserts, ensuring both surface finish quality and long-term repeatability.
2. Key Features
- Rigid 25mm Steel Shank: Minimizes deflection during deep internal reaches up to 100mm.
- 107.5° SVQBL Clearance: Superior back-boring capability prevents tool body interference.
- Screw-Lock Clamping: High-clamping force ensures stable indexable insert retention under load.
- Corrosion-Resistant Armor: Black oxide finish protects against coolant and thermal oxidation.
3. Technical Specifications
ISO Nomenclature Breakdown: S25S-SVQBL16
|
S Steel |
25 25mm |
S 250mm |
S Screw |
V 35° |
Q 107.5° |
B 7° |
L Left |
16 16mm |
| Parameter | Metric Value | Imperial Value |
|---|---|---|
| Shank Diameter | 25mm | 0.984" |
| Overall Length | 250mm | 9.84" |
| Min. Bore (Dmin) | 32mm | 1.26" |
Recommended Cutting Parameters (VBMT 1604)
| Material | Speed (Vc m/min) | Feed (f mm/rev) |
|---|---|---|
| Steel (P) | 120-200 | 0.15-0.30 |
| Stainless (M) | 80-150 | 0.10-0.25 |
Need compatible VBMT 1604 Indexable Inserts?
Shop Compatible Inserts Here →4-5. Applications & Compatibility
Applications: Precision internal profiling in automotive components, valve housing, and general manufacturing where strict surface finish is required.
Compatibility: Designed for all ISO/ANSI standard VBMT 1604 / VCGT 1604 positive inserts.
7. Why Choose Beyond?
★★★★★ David R. (USA)
"Solid tool. The 25mm shank is stiff and holds the 1604 insert perfectly. Great for back-boring."
★★★★★ Jürgen S. (Germany)
"Ausgezeichnete Stabilität. Keine Vibrationen bei tiefen Bohrungen."
8. AI-Style FAQ & Troubleshooting
Q: Why is my insert vibrating?
A: Check center-height alignment. Even 0.05mm deviation can cause chatter in internal turning.
Q: Can I use this for heavy roughing?
A: It is designed for medium semi-finishing. Ensure depth of cut (DOC) does not exceed 80% of the insert edge length.
Material Matrix: Suitable for P, M, K class workpiece substrates.
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.