Johnford SDMC Series – CNC Bridge Mills

The Johnford SDMC Series delivers exceptional flexibility and structural integrity for machining the largest and heaviest workpieces. These sliding column, fixed-table bridge mills feature machine weights exceeding 400,000 lbs and travels up to 30 meters, providing unlimited table load capacity and absolute accuracy across long production runs. Models are available with X-axis travels up to 25,000 mm (984″), and can be configured as 3-Axis, 5-Face, or full 5-Axis machines to match part geometries and complexity requirements. Custom machine configurations are also available to meet specific manufacturing needs.

Benefits for Metal Cutting Manufacturers

Johnford SDMC CNC bridge mills help manufacturers meet demanding part tolerances and production schedules—especially on components too large or heavy to reposition during machining. The fixed-table, sliding column design supports virtually unlimited table weights, reducing setup complexity while enhancing rigidity, stability, and accuracy across extended travels. This leads to consistent ultra-fine surface finishes, shorter cycle times, and increased process reliability for critical industries.

Whether machining aerospace bulkheads, turbine casings, or mold bases, SDMC bridge mills deliver the stability and horsepower required for deep cavity milling, multi-plane accuracy, and repeatable performance. The result: improved throughput, fewer setups, and long-term machine stability—even under heavy cutting conditions. For high-mix, large-format parts, the SDMC Series is a cost-effective solution engineered for both flexibility and longevity.

Key Features

Sliding column gantry design with fixed table for maximum part weight capacity and stability
Heavy-duty Meehanite cast iron construction—machine weights exceed 400,000 lbs for vibration damping and rigidity
Massive X-axis travel options up to 25,000 mm (984″) for extremely long workpieces
Y-axis travel up to 6,000 mm and Z-axis up to 1,500 mm, with optional W-axis for extended vertical reach
Twin 80 mm ballscrews or precision rack-and-pinion drives for smooth column movement across long distances
2-axis automatic head options for programmable 5-face or simultaneous 5-axis machining
Johnford-designed AC-4 and AC-5 heads with HSK-63A or HSK-100A, high RPM, and torque ratings
Turcite-B coated box ways and diagonal ribbing for long-term accuracy and reduced structural distortion
Column-mounted automatic toolchanger with up to 60 tools (floor-mounted for larger capacity)
High-volume chip evacuation system with twin screw conveyors and caterpillar-style conveyor

Ideal Cutting Applications

Aerospace bulkheads, spars, ribs, frames, and mounting structures
Large mold and die bases, core blocks, and deep cavity tooling
Structural weldments and industrial machinery beds
Turbine housings, casings, and generator enclosures
Power generation components for wind, oil & gas, and nuclear sectors
Heavy vehicle chassis, underframes, and engine mounting blocks
Precision-machined defense components and armor systems

Custom-Engineered to Fit Your Needs

Every Johnford SDMC bridge mill is available with custom-built travels, head configurations, and structural modifications to meet your exact manufacturing requirements. Whether you need expanded Y-axis clearance, extended Z/W travels, specialized toolchanger capacity, or integration with automation systems, Johnford’s engineering team can tailor the machine to your production environment. This flexibility ensures the SDMC platform delivers optimal performance no matter how demanding the part or application.

📞 Ready to Build Bigger?

No matter which SDMC configuration you choose — 3-axis, 5-face, or full 5-axis — each machine is engineered with Johnford’s signature strength, accuracy, and flexibility.

Contact us today to spec out your custom machine or request a quote.

Looking for a different size/capability? Check out other models in the DMC Series:

DMC Series – 900mm – 1500mm Moving Table/Fixed Column Bridge Mills
DMC Series – 1600mm – 6100mm Moving Table/Fixed Column Bridge Mills
S/SH Series – 2100mm – 6100mm with 1780mm (70″) Extended Y-Axis Travel
P/PH Series – 3100mm – 6100mm with 2300mm (90.5″) Extended Y-Axis Travel
L/LH Series – 3100mm – 6100mm with 2800mm (110.2″) Extended Y-Axis Travel
Fixed/Moving Column & 5-Axis/5-Face – 4000mm – 6000mm+W

Specs
Standard
Options
Videos
5-Face/
5-Axis Heads
STOCK

Specifications

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3 Axis
5 Face
5 Axis

Item / Model	SDMC-5000 Request a Quote	SDMC-6000 Request a Quote	SDMC-7000 Request a Quote	SDMC-8000 Request a Quote	SDMC-9000 Request a Quote	SDMC-10000 – 25000 Request a Quote
X Travel	197″	236″	275″	315″	354″	394″ – 984″
Y Travel	72″ – 197″	72″ – 236″	72″ – 236″	72″ – 236″	72″ – 236″	72″ – 236″
Z Travel	42″ (48″/60″ opt.)	42″ (48″/60″ opt.)	42″ (48″/60″ opt.)	42″ (48″/60″ opt.)	42″ (48″/60″ opt.)	42″ (48″/60″ opt.)
Distance Between Columns	71″ – 197″	71″ – 236″	71″ – 236″	71″ – 236″	71″ – 236″	71″ – 236″
W Axis (opt.)	39.4″ – 78.7″	39.4″ – 78.7″	39.4″ – 78.7″	39.4″ – 78.7″	39.4″ – 78.7″	39.8″ – 78.7″
Table Size	197″ x 52″ – 157″	236″ x 52″ – 157″	275″ x 52″ – 216″	315″ x 52″ – 216″	354″ x 52″ – 216″	394″ – 984″ x 52″ – 216″
Table Load	11,000 lbs./M²	11,000 lbs./M²	11,000 lbs./M²	11,000 lbs./M²	11,000 lbs./M²	11,000 lbs./M²
Rapid Traverse (XYZ)	394 IPM (787 opt.)	394 IPM (787 opt.)	394 IPM (787 opt.)	394 IPM (787 opt.)	394 IPM (787 opt.)	394 IPM (787 opt.)
CNC Control	Fanuc Oi-MF Plus or 31i-MB Plus	Fanuc Oi-MF Plus or 31i-MB Plus	Fanuc Oi-MF Plus or 31i-MB Plus	Fanuc Oi-MF Plus or 31i-MB Plus	Fanuc Oi-MF Plus or 31i-MB Plus	Fanuc Oi-MF Plus or 31i-MB Plus
Spindle Taper	CAT-50 (BT-50 opt.)	CAT-50 (BT-50 opt.)	CAT-50 (BT-50 opt.)	CAT-50 (BT-50 opt.)	CAT-50 (BT-50 opt.)	CAT-50 (BT-50 opt.)
Spindle Speed	6,000 RPM (up to 15,000 opt.)	6,000 RPM (up to 15,000 opt.)	6,000 RPM (up to 15,000 opt.)	6,000 RPM (up to 15,000 opt.)	6,000 RPM (up to 15,000 opt.)	6,000 RPM (up to 15,000 opt.)
Spindle Motor	35 HP (50 HP opt.)	35 HP (50 HP opt.)	35 HP (50 HP opt.)	35 HP (50 HP opt.)	35 HP (50 HP opt.)	35 HP (50 HP opt.)
Spindle Drive	2 Speed Gearbox	2 Speed Gearbox	2 Speed Gearbox	2 Speed Gearbox	2 Speed Gearbox	2 Speed Gearbox
ATC Capacity	40 (60/80/120 opt.)	40 (60/80/120 opt.)	40 (60/80/120 opt.)	40 (60/80/120 opt.)	40 (60/80/120 opt.)	40 (60/80/120 opt.)
Weight (est. base only)	120,000 lbs.	142,000 lbs.	170,000 lbs.	220,000 lbs.	240,000 lbs.	260,000 – 300,000 lbs.+

Item / Model	SDMC-5000x1800-5000+5F Request a Quote	SDMC-6000×1800-6000+5F Request a Quote	SDMC-7000x2800-6000+5F Request a Quote	SDMC-8000x2800-6000+5F Request a Quote	SDMC-9000x2800-6000+5F Request a Quote	SDMC-10000-25000×1800-6000+5F Request a Quote
X Travel	197″	236″	275″	315″	354″	394″ – 984″
Y Travel	102″ – 228″	102″ – 268″	102″ – 268″	102″ – 268″	102″ – 268″	102″ – 268″
Z Travel	42″ (48″/60″ opt.)	42″ (48″/60″ opt.)	42″ (48″/60″ opt.)	42″ (48″/60″ opt.)	42″ (48″/60″ opt.)	42″ (48″/60″ opt.)
Distance Between Columns	71″ – 158″	71″ – 236″	71″ – 236″	71″ – 236″	71″ – 236″	71″ – 236″
W Axis (opt.)	39.4″ – 78.7″	39.4″ – 78.7″	39.4″ – 78.7″	39.4″ – 78.7″	39.4″ – 78.7″	39.8″ – 78.7″
Table Size	197″ x 52″ – 197″ x 138″	236″ x 51″ – 236″ x 138″	275″ x 87″ – 138″	315″ x 87 – 134″	354″ x 87 – 134″	394″ x 138″
Table Load	11,000 lbs./M²	11,000 lbs./M²	11,000 lbs./M²	11,000 lbs./M²	11,000 lbs./M²	11,000 lbs./M²
Rapid Traverse (XYZ)	394 IPM (787 opt.)	394 IPM (787 opt.)	394 IPM (787 opt.)	394 IPM (787 opt.)	394 IPM (787 opt.)	394 IPM (787 opt.)
CNC Control	Fanuc Oi-MF Plus or 31i-MB Plus	Fanuc Oi-MF Plus or 31i-MB Plus	Fanuc Oi-MF Plus or 31i-MB Plus	Fanuc Oi-MF Plus or 31i-MB Plus	Fanuc Oi-MF Plus or 31i-MB Plus	Fanuc Oi-MF Plus or 31i-MB Plus
Automatic Attachment Changer	2 – 4 Positions	2 – 4 Positions	2 – 4 Positions	2 – 4 Positions	2 – 4 Positions	2 – 4 Positions
5-Face Index	1, 2.5, 5 Degrees	1, 2.5, 5 Degrees	1, 2.5, 5 Degrees	1, 2.5, 5 Degrees	1, 2.5, 5 Degrees	1, 2.5, 5 Degrees
Spindle Taper	CAT-50 (BT-50 opt.)	CAT-50 (BT-50 opt.)	CAT-50 (BT-50 opt.)	CAT-50 (BT-50 opt.)	CAT-50 (BT-50 opt.)	CAT-50 (BT-50 opt.)
Spindle Speed	6,000/2,000 RPM	6,000/2,000 RPM	6,000/2,000 RPM	6,000/2,000 RPM	6,000/2,000 RPM	6,000/2,000 RPM
Spindle Motor	35 HP (50 opt.)	35 HP (50 opt.)	35 HP (50 opt.)	35 HP (50 opt.)	35 HP (50 opt.)	35 HP (50 opt.)
Spindle Drive	2 Speed Gearbox	2 Speed Gearbox	2 Speed Gearbox	2 Speed Gearbox	2 Speed Gearbox	2 Speed Gearbox
ATC Capacity	40 (60/80/120 opt.)	40 (60/80/120 opt.)	40 (60/80/120 opt.)	40 (60/80/120 opt.)	40 (60/80/120 opt.)	40 (60/80/120 opt.)
Weight (est. base only)	120,000 – 160,000 lbs.	140,000 – 175,000 lbs.	140,000 – 175,000 lbs.	200,000 lbs.	175,000 – 264,000 lbs.	212,000 – 300,000 lbs.+

Item / Model	SDMC-5000x1800-5000+5A Request a Quote	SDMC-6000×1800-6000+5A Request a Quote	SDMC-7000x2800-6000+5A Request a Quote	SDMC-8000x2800-6000+5A Request a Quote	SDMC-9000x2800-6000+5A Request a Quote	SDMC-10000-25000×2800-6000+5A Request a Quote
X Axis Travel	197″	236″	275″	315″	354″	394″ – 984″
Y Axis Travel	102″ – 228″	102″ – 268″	102″ – 268″	102″ – 268″	102″ – 268″	102″ – 268″
Z Axis Travel	42″ (48″/60″ opt.)	42″ (48″/60″ opt.)	42″ (48″/60″ opt.)	42″ (48″/60″ opt.)	42″ (48″/60″ opt.)	42″ (48″/60″ opt.)
Distance Between Columns	71″ – 158″	71″ – 236″	71″ – 236″	71″ – 236″	71″ – 236″	71″ – 236″
W Axis (opt.)	39.4″ – 78.7″	39.4″ – 78.7″	39.4″ – 78.7″	39.4″ – 78.7″	39.4″ – 78.7″	39.8″ – 78.7″
Table Size	197″ x 52″ – 138″	236″ x 52″ – 138″	275″ x 87″ – 138″	315″ x 87″ – 138″	354″ x 87″ – 138″	394″ x 87″ – 138″
Table Load	11,000 lbs./M²	11,000 lbs./M²	11,000 lbs./M²	11,000 lbs./M²	11,000 lbs./M²	11,000 lbs./M²
Rapid Traverse (XYZ)	394 IPM (787 opt.)	394 IPM (787 opt.)	394 IPM (787 opt.)	394 IPM (787 opt.)	394 IPM (787 opt.)	394 IPM (787 opt.)
CNC Control	Fanuc 31i-MB Plus or 31i-MB5 Plus	Fanuc 31i-MB Plus or 31i-MB5 Plus	Fanuc 31i-MB Plus or 31i-MB5 Plus	Fanuc 31i-MB Plus or 31i-MB5 Plus	Fanuc 31i-MB Plus or 31i-MB5 Plus	Fanuc 31i-MB Plus or 31i-MB5 Plus
ATC Capacity	40 (60/80/120 opt.)	40 (60/80/120 opt.)	40 (60/80/120 opt.)	40 (60/80/120 opt.)	40 (60/80/120 opt.)	40 (60/80/120 opt.)
TU-35 Heavy-Duty Mono Head
Spindle Taper	CAT-50 (HSK-100A opt.)	CAT-50 (HSK-100A opt.)	CAT-50 (HSK-100A opt.)	CAT-50 (HSK-100A opt.)	CAT-50 (HSK-100A opt.)	CAT-50 (HSK-100A opt.)
Spindle Speed	4,000 RPM (6,000 opt.)	4,000 RPM (6,000 opt.)	4,000 RPM (6,000 opt.)	4,000 RPM (6,000 opt.)	4,000 RPM (6,000 opt.)	4,000 RPM (6,000 opt.)
Spindle Motor	35 HP (50 opt.)	35 HP (50 opt.)	35 HP (50 opt.)	35 HP (50 opt.)	35 HP (50 opt.)	35 HP (50 opt.)
Spindle Drive	2 Speed Gearbox	2 Speed Gearbox	2 Speed Gearbox	2 Speed Gearbox	2 Speed Gearbox	2 Speed Gearbox
AC-52 High-Speed Fork-Type Head
Spindle Taper	HSK-100A (HSK-63A opt.)	HSK-100A (HSK-63A opt.)	HSK-100A (HSK-63A opt.)	HSK-100A (HSK-63A opt.)	HSK-100A (HSK-63A opt.)	HSK-100A (HSK-63A opt.)
Spindle Speed	10,000 RPM (24,000 opt.)	10,000 RPM (24,000 opt.)	10,000 RPM (24,000 opt.)	10,000 RPM (24,000 opt.)	10,000 RPM (24,000 opt.)	10,000 RPM (24,000 opt.)
Spindle Drive	Integral Motor	Integral Motor	Integral Motor	Integral Motor	Integral Motor	Integral Motor
Spindle Motor	52 HP	52 HP	52 HP	52 HP	52 HP	52 HP
Weight (est. base only)	120,000 – 160,000 lbs.	140,000 – 175,000 lbs.	140,000 – 175,000 lbs.	150,000 – 200,000 lbs.	175,000 – 264,000 lbs.	212,000 – 300,000 lbs.+

3 Axis Standard Accessories

Dual linear scales on X
Flood coolant system with programmable air blast
Air blast for spindle
Auto lubrication with alarm
Chip removal system with (3) caterpillar-type chip conveyors
Halogen work lamp
2-Speed geared head with spindle/headstock cooler
Remote handwheel
Heat exchangers for control cabinets
Hydraulic counterbalance for headstock
Rigid tapping

5 Face Standard Accessories

Dual linear scales on X
Flood coolant system with programmable air blast
Air blast for spindle
Auto lubrication with alarm
Chip removal system with chip conveyors
Halogen work lamp
2-Speed geared head with spindle/headstock cooler
Remote handwheel
Heat exchangers for control cabinets
Hyrdraulic counterbalance for headstock
Rigid tapping
Automatic attachment changer (2 positions) include (1) 5FH01A milling head with 5 degree index and (1) cover plate

5 Axis Standard Accessories

Dual linear scales on X
Flood coolant system with programmable air blast
Air blast for spindle
Auto lubrication with alarm
Chip removal system with chip conveyors
Halogen work lamp
Remote handwheel
Heat exchangers for control cabinets
Hydraulic counterbalance for headstock
Rigid tapping
Spindle / headstock chiller

3 Axis Options

5-Face Heads
5-Axis Heads
Fanuc 31iM-B Plus control instead of Fanuc OiM-F Plus
Extended Z Axis travel 42” (48” spindle nose to table max. / 6” min.)
Extended Z Axis travel 48” (54” spindle nose to table max. / 6” min.)
Extended Z Axis travel 60” (66” spindle nose to table max. / 6” min.)
50HP spindle motor upgrade
Unist Uni-Max cool lubricator for near dry machining – installed
Marposs part probe (multiple options available)
Marposs tool setter (multiple options available)
Renishaw part probe (multiple options available)
Renishaw tool setter (multiple options available)
Fanuc AC Drive for 4th Axis and 4th Axis interface
High pressure coolant thru spindle 400 PSI
High pressure coolant thru spindle 1000 PSI
440/ 460 / 480 Volt operation
60 Tool ATC
80 Tool ATC
120 Tool ATC
8,000 RPM spindle upgrade
10,000 RPM direct drive 35HP spindle upgrade from 6,000 RPM (122 ft./lbs. torque)
10,000 RPM direct drive 40HP spindle upgrade from 6,000 RPM (258 ft./lbs. torque)
15,000 RPM Weiss 56HP integral spindle HSK-100A taper
Linear scales in Y & Z Axes
Heavy duty right angle milling head (50 taper input, 50 taper output) (head limited to 2000 RPM max. and 25HP max.)
Heavy duty adjustable angle milling head (50 taper input, 50 taper output) (Head limited to 1200 RPM max. and 20HP max.)
Control options available upon request

5 Face Options

BT-50 tool changer
Extended Z Axis travel 48”
Extended Z Axis travel 60” (19.7” x 19.7” square ram, 50HP spindle, 4000 RPM
50HP spindle motor and larger gear box
52HP integral motor spindle instead of 35HP + 2 speed gearbox
2.5 Degree head index instead of 5 degree
3 Position automatic head changer (2 position is standard) (this holds 2 heads + cover)
4 Position automatic head changer (2 position is standard) (this holds 3 heads + cover)
F5H01A Right angle milling head (auto index and auto tool change)
MH01A Multi-angle milling head (C and A axis auto index and auto tool change)
EH07 432mm Extension head (auto attach and hyd clamp / unclamp manual tool change)
EH07 450mm Extension head (auto attach and hyd clamp / unclamp manual tool change)
EH09 500mm Extension head (auto attach and hydraulic clamp / unclamp manual tool change)
ERH01 283mm Right angle extended head (auto attach and tool change by manual bolt)
ERH02 500mm Right angle Extended Head (auto attach and tool change by manual bolt)
ERH03 605mm Slim right angle extended head (auto attach, tool change by manual bolt)
NSH01 30 Degree fixed angle milling head (auto index and tool change by manual bolt)
NSH02 Non – standard milling head (auto index and tool change by manual bolt)
Marposs part probe (multiple options available)
Marposs tool setter (multiple options available)
Renishaw part probe (multiple options available)
Renishaw tool setter (multiple options available)
Fanuc AC Drive for 4th Axis and 4th Axis interface
High pressure coolant thru spindle 400 PSI
High pressure coolant thru spindle 1000 PSI (includes dual filters)
440 / 460 / 480 Volt operation
60 Tool ATC
80 Tool ATC
120 Tool ATC
Linear scales in Y & Z Axes
Control options available upon request

5-Axis Options

Z Axis travel extension to 48″ / 60” from 42”
50HP spindle motor upgrade
HSK-100A spindle and tool changer instead of 50 taper
6,000 RPM spindle upgrade with air/oil mist lubrication
50HP spindle motor upgrade
Unist Uni-Max cool lubricator for near dry machining – installed
Marposs part probe (multiple options available)
Marposs tool setter (multiple options available)
Renishaw part probe (multiple options available)
Renishaw tool setter (multiple options available)
6000 RPM spindle upgrade with air / oil mist lubrication of bearings and gears
Thermal compensation software including installation and machine mapping
High pressure coolant thru spindle 400 PSI
High pressure coolant thru spindle 1000 PSI
440/ 460 / 480 Volt operation
60 Tool ATC
80 Tool ATC
120 Tool ATC
Linear scales on Y & Z Axes
Siemens One Control instead of Fanuc 31iM-B Plus
Control options available upon request

5-Face Heads

5-Face Milling Head: 90°, C-Axis 5°/2.5° (opt.) 1° (opt.), BT-50, 2000 RPM (4000 opt.), 30kW Power, 1500 N-m Torque, ∅200 Max Tooling Diameter, Hydraulic/Automatic Tool Change, Coolant Thru Spindle (opt.)
Extended Vertical Milling Head: BT-50, 4000 RPM, 30kW Power, 800N-M Torque, ∅215 Max Tooling Diameter, 5829.3mm Extension, Auto Clamp Tool Change
MA25 or Multi-Angle Milling Head: C-Axis 5°/2.5° (opt.) 1° (opt.) 360°, A-Axis 5°/2.5° (opt.) 1° (opt.) ± 110°, BT-50, 2000 RPM, 30kW Power, 1,500 N-m Torque, ∅200 Max Tooling Diameter, Hydraulic/Automatic Tool Change
Slim Extended Head: Auto 5°/2.5° (opt.), BT-50, 2000 RPM, 30kW Power, 800 N-m Torque, ∅215 Max Tooling Diameter, Manual Tool Change

5-Axis / 2-Axis NC Heads

TU35+ Multi-Angle Head: BT-50 (HSK-100A opt.), C-Axis Min. Increment ±180° / 0.001°, A-Axis Min. Increment 360° / 0.001°, 4000 RPM, 35kW Power, 1,500 N-m Torque, ∅200 Max Tooling Diameter, Hydraulic/Automatic Tool Change
AC42: HSK-63A, 6,000 RPM std./20,000 max., C-Axis +/-200°, A-Axis +/-110°, 21kW (S1) 24kW (S6 60%), 34 N-m Continuous / 112 N-M max., Hydraulic Clamping
AC52: HSK-100A, 1,000 RPM std./10,000 max., C-Axis +/-200°, A-Axis +/-110°, 31kW (s1) 40kW (S6 40%), 290 N-m (S1) / 386 N-m (S6), Hydraulic Clamping