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BRIDGE MILLS
At Campro USA, our PV Series Bridge Mills are engineered to handle high-precision, large-format machining with exceptional rigidity and stability. These are constructed with monobloc double-column design and are ideal for industries that require heavy-duty performance. Each model in the PV lineup offers varying table sizes, travels, and capacities, allowing you to choose the perfect fit for your production needs. Our Bridge Mills deliver uncompromising accuracy, fast positioning, and customizable spindle/tool options backed by thermal control, automatic lubrication, and powerful chip management systems.
Explore Our Bridge Mill Categories
PV-2216
The entry point to our Bridge Mills PV lineup, the PV-2216 offers 86″ X-axis travel, a geared 35 HP Cat 50 BIG + spindle, and a rigid frame perfect for small-to-mid-size heavy parts. These are ideal for precision with a minimal footprint.
PV-3221
With 125.9″ × 82.6″ × 31.4″ travel and a load capacity of 17,636 lb, the PV-3221 is a powerhouse for machining wide, heavy components with stability and accuracy, thanks to its box-way Z-axis and roller linear X/Y.
PV-3216
A step up in capacity, the PV-3216 delivers 126″ X-travel, roller linear guideways, and a geared 35 HP Cat 50 BIG + spindle, designed for users seeking a balance between larger part capacity and high-speed cutting performance.
PV-4216
The Bridge Mills PV-4216 retains 165″ X-travel but offers a 63″ Y-axis, ideal for longer parts that don't require full-width machining, yet need high rigidity and a robust table load capacity.
PV-4221
This model enhances both capacity and precision, with 165″ × 82.6″ travels and a 22,000 lb table load. These are designed for oversized molds, frames, and structural parts needing extreme rigidity and thermal stability.
PV-5221
With a massive 204″ X-travel and 82.6″ Y-travel, the PV-5221 accommodates large aerospace or industrial parts, combining long stroke, powerful spindle options, and high feed rates for efficient machining.
PV-5226
The PV-5226 expands the Y-axis to 102.3″ and supports up to 35,273 lb, perfect for wide-format machining applications. It includes optional ball-screw cooling and linear scale feedback for enhanced accuracy.
PV-5231
Our largest Bridge Mills PV model, with 204″ X and 122″ Y travel, the PV-5231 is built for ultra-heavy-duty operations. This is engineered for extreme part sizes without compromising precision, rigidity, or speed.
Benefits of Bridge Mills
Expanded Work
Capacity
These machines offer a large work envelope with extended X, Y, and Z-axis travels, making them ideal for machining oversized components.
Versatile Spindle Configurations
Users can choose between high-torque gear-head spindles and high-speed built-in motor spindles to suit specific application needs.
Thermal Stability Enhancements
Options such as ball-screw cooling and linear scale feedback systems help reduce thermal distortion and ensure consistent performance.
High Load-Bearing
Ability
Designed to support extremely heavy parts, bridge mills are well-suited for applications involving molds, dies, and large structural pieces.
Fast and Controlled Movement
Equipped with roller linear guideways and box-way rams, bridge mills ensure smooth and efficient positioning during operations.
Precision Over Large Distances
Despite their size, bridge mills maintain high accuracy and repeatability, even when machining large workpieces.
Efficient Chip
Management
Built-in dual screw conveyors and optional external systems help remove chips quickly, keeping the machine clean and productive.
Automated Lubrication
and Monitoring
Integrated lubrication systems with pressure detection improve reliability and reduce maintenance requirements.
Applications Across Diverse Industries
Bridge mills are essential tools in modern manufacturing environments that demand precision, power, and scalability. Their versatility makes them suitable for a wide range of industries, including:
Aerospace
For high-precision machining of structural parts, landing gear, and fuselage components.
Automotive
It is ideal for producing engine blocks, transmission housings, and large tooling.
Mold & Die
These are perfect for manufacturing injection molds, casting dies, and stamping tools.
Energy
It can be used in the production of turbine parts, power generation components, and heavy-duty enclosures.
Heavy Equipment
This supports fabrication of large frames and structural parts for construction and mining machinery.
Marine & Shipbuilding
These enable accurate machining of propellers, hull sections, and engine supports.
Defense & Military
It is suitable for armored vehicle parts, weapon mounts, and large-scale assemblies.
Rail & Transportation
This can be used for machining chassis, suspension, and drivetrain components.
Contact us today to learn more about our Bridge Mill solutions, request a quote, or speak with a product specialist for tailored recommendations. We're here to assist you from inquiry to installation.
FAQS
What is a bridge mill?
A bridge mill is a vertical machining center with a fully supported, extended Y-axis. A bridge mill is constructed with a base/bed casting and a one-piece bridge structure that is bolted to the bed. Along the bridge structure is the Y-axis, and along the length of the bed is the X-axis.
What makes a bridge mill different from a double column machining center?
A double column machining center has the same design, but because it is much larger, the bridge structure is made up of three separate components—2 vertical columns and a horizontal cross beam.
How is a bridge mill different than a gantry mill?
A double column machining center has the same design, but because it is much larger, the bridge structure is made up of three separate components—2 vertical columns and a horizontal cross beam.
How is a bridge mill different than a gantry mill?
A gantry mill is similar in construction, but the entire bridge (gantry) moves along the X-axis rather than the table moving, as with the bridge mill or double column.
How is a bridge mill different than a vertical machining center?
There are several types of vertical machining center construction—L-frame, C-frame, and bridge-style. The main difference between these machines and a bridge mill is that the Y-axis travel on a vertical machining center is limited due to the design.
What are the benefits of a bridge mill?
The extra travel provided by the bridge mill allows for the manufacturing of much larger, longer parts than on a vertical machining center, since machining on a vertical machining center is restricted by bed size—particularly the Y-axis. A bridge mill’s larger work envelope provides greater opportunities for manufacturers in the die/mold, aerospace, automotive, and other industries. Additionally, a bridge mill offers much easier access to the table and spindle for part loading / unloading as well as tool maintenance.
