VH Concealed Hydraulic Machine Vise – Large Opening for Precision Milling & MC Applications
Precision Milling Machine Vise Overview
The Concealed Upgraded Large-Opening Hydraulic Vise redefines workholding for modern machine shops. Unlike conventional vises with exposed cylinders or bulky external components, this model integrates the entire hydraulic system inside the vise body. The result is a clean, hazard-free workspace with no protruding parts that can interfere with tool paths or operator movement.
Its large jaw opening—substantially wider than standard vises—accommodates oversized blanks, complex castings, and stacked workpieces that would otherwise require custom fixturing. Whether you are running a small milling machine for prototype runs or a high-production machining center (MC), this vise adapts quickly to changing job requirements.
Built-in Hydraulic Vise Core Strengths
Concealed Hydraulic Power – The built-in cylinder generates consistent, high-power clamping force without external hoses or pumps that clutter the table. This design also prevents coolant and chip ingress, extending service life.
Mechanically Pressurized System – Pressure is applied through a robust mechanical linkage combined with hydraulic multiplication. This dual mechanism ensures that once clamped, the vise holds firm even under heavy intermittent cuts, delivering true MC precision power vise performance.
Large Opening, Wide Versatility – Jaw opening capacity is upgraded to handle parts up to [insert specific size if known, e.g., 300 mm]. This makes it equally effective for small milling machine vise tasks (e.g., delicate instrument components) and heavy-duty roughing on large structural parts.
Stationary Rigidity – Designed as a stationary machine vise, it mounts securely to the table with multiple bolt-down slots. The hardened steel body and precision-ground base ensure minimal deflection, preserving tolerance for precision milling machine vise operations.
Technical Highlights
Clamping force: up to 6500kgf (hydraulically amplified)
Jaw width options: 180/240/320
Maximum opening: 320
Sealed internal hydraulic unit – no external leakage
Mechanically indexed jaw plates for quick repositioning
Compatible with standard T-slots and zero-point mounting systems
Milling Machine Vises Specifications
| MODEL | A | B | Cmax | C1 | C2 | C3 | D | E | Emax | F | G | G1 | H | I | L | N | P | Clamping force (kgf) | Net weight (kg) | Carton |
| VH-4-180 | 10 | 40 | 180 | 0-62 | 58-120 | 116-180 | 60 | 430 | 596 | 135 | 122 | 166 | 76 | 100 | 12 | 18 | 24 | 4000 | 25 | 490×210x130 |
| VH-5-240 | 134 | 50 | 240 | 0-82 | 78-160 | 158-240 | 75 | 540 | 716 | 160 | 150 | 190 | 101 | 125 | 18 | 20 | 24 | 4500 | 38 | 610×230x150 |
| VH-6-320 | 154 | 54 | 320 | 0-112 | 107-222 | 217-320 | 82 | 620 | 824 | 180 | 170 | 220 | 113 | 136 | 20 | 20 | 28 | 4500 | 48 | 690×260x160 |
| VH-8-320 | 198 | 65 | 320 | 0-112 | 107-222 | 217-320 | 88 | 640 | 846 | 225 | 215 | 285 | 125 | 153 | 22 | 20 | 28 | 6500 | 68 | 710×330×180 |
High Precision Tool Vise Application Fields
This precision hydraulic power machine vise is at home in:
CNC vertical and horizontal machining centers
Conventional milling machines (bridgeport-type and larger)
Die and mold manufacturing (for oversized electrodes and inserts)
Aerospace and automotive production (where part consistency is critical)
Job shops that handle mixed batch sizes, from tiny aluminium components to large steel blocks
For small milling machine vise users, the large opening may seem excessive, but the fine-adjustment screw and sensitive hydraulic response allow delicate clamping on miniature parts without distortion—a feature rarely found in oversized vises.
Why Choose This Hydraulic Clamping Vise Over Standard Models?
Most machine vises either offer high clamping force with exposed mechanics, or compact size with limited capacity. This unit bridges the gap. The concealed cylinder reduces maintenance intervals, while the upgraded opening eliminates the need for multiple vises across different job sizes. Additionally, the mechanically pressurized backup ensures that even if hydraulic pressure drops, the mechanical lock retains clamp force—a safety net for overnight runs.
We have also reinforced the stationary base with extra ribbing, making it one of the most rigid precision machine vises in its class. Combined with hardened jaw plates and replaceable inserts, it delivers years of reliable service with minimal wear.
What customers say about us
ABOUT US
Established 2015, MSK is ISO 9001‑certified (Rheinland). Equipped with German SACCKE 5‑axis grinders, ZOLLER 6‑axis testers, and PALMARY machine tools. We produce efficient, professional CNC tools and stock a full range of cutting tools, holders, dies, and machines.
FAQ
Q1: What is the maximum clamping force of this hydraulic power machine vise, and how is it generated?
A: The exact rating depends on the model size, but our units typically deliver between 4000-6500kgf of holding force. This is achieved through a mechanically pressurized system—you operate a handwheel or lever that drives a built-in hydraulic intensifier. The hydraulic cylinder multiplies your input torque, so you get high power without requiring an external pump or bulky air lines. The pressure stays consistent even during heavy interrupted cuts on milling machine vises.
Q2: What are the real benefits of the concealed hydraulic cylinder design?
A: The main advantage is workspace safety and cleanliness. With no exposed pistons, hoses, or external tanks, the vise has a flat, smooth profile. Chips and coolant slide off easily, and there are no protruding parts that could catch on tools, fixtures, or your hands. It also reduces maintenance—the sealed internal unit keeps contaminants out, so the hydraulic fluid stays clean longer. This makes it a true stationary machine vise for daily production use.
Q3: How large of a workpiece can this vise hold? Can it also handle small parts?
A: The upgraded jaw opening is up to 320 mm (depending on jaw width), which accommodates bulky blanks, castings, or stacked assemblies that normally require custom jaws. At the same time, the fine-adjustment screw and sensitive hydraulic response let you clamp delicate small parts without crushing them. So it works equally well as a small milling machine vise for prototypes and as a heavy-duty precision milling machine vise for large dies.
Q4: What makes this vise different from a standard hydraulic vise on the market?
A: Three things stand out: the concealed cylinder (not just covered, but fully integrated into the body), the large opening that bridges the gap between compact vises and giant ones, and the mechanical backup—even if hydraulic pressure bleeds slightly over time, the mechanical thread lock retains clamp force. This combination gives you the reliability of a high power hydraulic vise with the convenience of a low-profile, chip-resistant design, ideal for both job shops and production lines.
