PAMA Speedram 1500
Key Specifications
X Travel
Y Travel
Z Travel
Spindle Taper
Tool Capacity
Rapid Traverse
Overview
The PAMA Speedram 1500 is a heavy-duty floor-type CNC horizontal boring and milling machine defined by its 150 mm diameter spindle — one of the largest in the class — and built for the most demanding large-component machining applications in power generation, nuclear, shipbuilding, mining, and defense. Where the Speedram 1000 covers aerospace and general heavy engineering, the Speedram 1500 targets applications where maximum torque, maximum spindle power, and maximum rigidity are the primary requirements, and where the workpiece may weigh hundreds of tonnes.
The 150 mm spindle delivers up to 20,000 Nm of peak torque at the spindle nose and 50–75 kW of continuous cutting power, enabling aggressive material removal rates in large steel forgings, cast iron structures, and difficult nickel alloys. Floor-type architecture with a traversing column (Z-axis) and vertically moving headstock (Y-axis) gives the machine access to any point on a stationary large workpiece. Ram quill extension (W-axis) of 900 mm reaches deep bores and recessed cavities. Optional floor-mounted CNC rotary tables from 1,500 to 4,000 mm diameter provide part indexing.
Configurable axis travels accommodate a wide range of facility layouts: X-axis (ram horizontal) 3,500–8,000 mm, Y-axis (vertical) 2,500–5,000 mm, Z-axis (longitudinal column) up to 8,000 mm. The optional PAMA CNC facing head adds a U-axis for turning and facing large flanges to 3,000+ mm diameter directly on the machine.
The Siemens 840D sl control — the standard for large horizontal boring machines in Europe — provides full multi-axis interpolation, facing head cycles, and PAMA's large-part application-specific programming cycles. The Speedram 1500 is found in nuclear plant component shops, large marine diesel engine builders, and heavy mining equipment manufacturers where no other machine class can access the combination of workpiece size and machining accuracy required.
Full Specifications
| Parameter | Value |
|---|---|
| Machine Type | Floor-type CNC horizontal boring and milling machine |
| Spindle Diameter | 150 mm (5.91 in) |
| Spindle Speed | 1,600 RPM (standard) / 2,500 RPM (high-speed option) |
| Spindle Motor Power | 55 kW (74 hp) continuous / 75 kW (101 hp) 30-min |
| Spindle Torque | 20,000 Nm (14,751 ft-lb) peak |
| Spindle Taper | ISO 50 (standard) |
| X-Axis Travel | 3,500–8,000 mm (138–315 in), configurable |
| Y-Axis Travel | 2,500–5,000 mm (98–197 in), configurable |
| Z-Axis Travel | Up to 8,000 mm (315 in) |
| Travel W | 900 mm (35.4 in) ram quill extension |
| Rapid Traverse Rate | 12 m/min (472 ipm) all axes |
| Feed Rate | 1–4,000 mm/min |
| Positioning Accuracy | ±0.006 mm (±0.00024 in) full stroke (ISO 230-2) |
| Repeatability | ±0.004 mm (±0.00016 in) |
| Rotary Table | Optional floor-mounted CNC rotary table, 1,500–4,000 mm diameter, up to 400,000 kg capacity |
| Facing Head | Optional CNC facing head, U-axis ±225 mm (facing diameter up to 3,200 mm) |
| Tool Capacity | 80 (standard) / 160 (optional) |
| Tool Max Diameter | 500 mm (adjacent empty) |
| Tool Max Length | 1,000 mm |
| Tool Max Weight | 80 kg |
| CNC Control | Siemens 840D sl |
| Machine Weight | Approximately 150,000–250,000 kg depending on configuration |
| Brand | PAMA |
| Model | SPEEDRAM 2000 |
| Id | 724973 |
| Type | Horizontal Floor Type Boring Mills |
| Condition | Used - Good |
| Year | 2005 |
| Location | United States |
| Stock | 5654336 |
| First Name | Last Name |
| Will You Need Financing | YesNo |
| Yes | No |
| Will You Need Freight Service | YesNo |
Specifications sourced from machinetools.com — verified 2026-03-28
Strengths & Limitations
Strengths
- 150 mm spindle with 20,000 Nm peak torque enables aggressive material removal in large steel and cast iron forgings at a scale no machining center can approach
- Optional CNC rotary tables up to 4,000 mm diameter with 400,000 kg capacity support the largest workpieces in power generation, marine, and mining sectors
- CNC facing head (U-axis) enables full turning and facing operations on flanges to 3,200 mm diameter directly on the boring mill — eliminates need for a separate vertical lathe
- Configurable axis travels allow the Speedram 1500 to be sized exactly to the customer's largest workpiece envelope
- Siemens 840D sl with PAMA's large-part application cycles provides the programming sophistication needed for multi-face, multi-operation large component machining
- PAMA's 50+ years of floor-type boring machine engineering provides deep application knowledge for the most complex large-part machining challenges
Limitations
- Price of $1.5–3.5M and facility requirements (150,000+ kg machine weight, specialized floor preparation) require a substantial capital and infrastructure commitment
- Positioning accuracy of ±0.006 mm, while excellent at this scale and axis travel, is less precise than smaller machining centers — critical precision features may require dedicated precision machine finishing
- Machine configuration and installation projects typically take 12–24 months from order to production-ready — not a rapid capacity solution
- Specialty applications (nuclear, marine defense) may require additional certifications and factory audits of PAMA's quality system
- Service and parts support for PAMA equipment in North America requires European factory coordination — plan for longer response times than domestic machine tool builders
Best For
Frequently Asked Questions
01
The Speedram 1500 machine itself can reach workpieces of essentially unlimited weight when floor-mounted — the workpiece sits on the floor plate, not on the machine's table. The optional CNC rotary table (up to 4,000 mm diameter) is rated for up to 400,000 kg (400 tonnes) of workpiece load. Nuclear vessel heads, large ship engine blocks, and mining equipment housings in this weight range are typical applications. The practical limit is the crane capacity of the facility and the structural rating of the floor plate.
02
At very large scales, thermal expansion becomes the dominant accuracy challenge — a 5,000 mm cast iron structure expands 0.5 mm for every 10°C of temperature change. PAMA addresses this through linear scale feedback on all axes (rather than relying on ballscrew/encoder combinations), temperature sensors throughout the machine structure, and a Siemens 840D sl thermal compensation model. The ±0.006 mm specification is guaranteed ISO 230-2 measured, not a typical value. For the most critical bores, in-process probing with measurement-corrected offset is standard practice.
03
Spindle diameter directly affects torsional rigidity — a 150 mm spindle has approximately 3.4 times the torsional stiffness of a 100 mm spindle at the same material, which allows heavier boring cuts without deflection-induced bore taper or roundness error. The larger spindle also accommodates larger boring bars in the spindle taper, enabling larger bore diameters without extended-reach holders. For bores above 300 mm diameter in tough materials, the 150 mm spindle is typically the right choice.
04
A complete Speedram 1500 installation project — from signed order to acceptance testing — typically requires 18–30 months. This includes: 3–4 months of foundation and floor plate engineering and construction; 10–16 months of machine manufacturing at PAMA's Rovereto factory; 2–4 months of installation and commissioning on-site. PAMA's project management team coordinates the foundation, installation, and commissioning phases. Customers should plan facility preparation to begin immediately after contract signing.
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