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Brand: E.H. Wachs
E.H. Wachs SDSF Small Diameter Split Frame Pipe Cutter
Description
A clamshell frame for cutting and prepping small-bore pipe in place
The E.H. Wachs SDSF is the smallest member of the Wachs split-frame family: an OD-mounted machine tool that cuts, bevels and counterbores pipe and tube from 0.5 to 6 in nominal size (ND12.5 to ND150). The frame splits in half so it can be positioned over inline pipe, and it is designed for simultaneous cutting and bevelling. It also serves as the rotating platform for tool slides that remove socket welds axially or radially without damaging the base material.
The machine suits low-clearance work. A self-squaring clamping system gives fast set-up, and the feed system keeps radial and axial clearance small, which matters on crowded racks and heat-exchanger or boiler connections where a full-size cutter would not fit.
Technical specifications
| Parameter | Specification |
|---|---|
| Manufacturer / model | E.H. Wachs / SDSF Small Diameter Split Frame |
| Function | Cut, bevel and counterbore pipe and tube; radial and axial socket weld removal; chipless wheel cutting |
| Tube and pipe capacity | 0.84 to 6.625 in OD (21.3 to 168.3 mm); nominal 0.5 to 6 in (ND12.5 to ND150) |
| Wall thickness | 0.062 to 0.4375 in (1.6 to 11.1 mm) |
| Cutting speed | 30 surface ft/min on 2 in (ND50) pipe; 40 surface ft/min on 4 in (ND100) pipe |
| Feed | Positive mechanical star wheel; fixed at 0.0031 in per trip |
| Drive options | Pneumatic, or electric 110 V or 220 V |
| Air requirement | 35 cfm at 90 psi (1.0 m3/min at 6.2 bar) |
| Electrical requirement | 110 V 10 A or 220 V 5 A, depending on the drive motor |
| Tool slides (optional) | Parting, beveling, radial socket weld removal, axial socket weld removal, universal counterbore, foreign material exclusion (FME) module |
| Tool stroke | 0.468 in (11.9 mm) |
| Construction and finish | Alloy steel with hardened components; hard chrome coating and black oxide |
| Tooling | Socket weld removal tooling and part/bevel tooling, high-speed steel or carbide |
| Packaging | Heavy-duty carrying case |
Size and part number table
| Size and part number | Pipe diameter range | Machine OD |
|---|---|---|
| 1 in / 80-4000-10 | 0.5 to 1 in (12.7 to 25.4 mm) | 5.00 in |
| 1.5 in / 80-4000-15 | 1 to 1.5 in (25.4 to 38.1 mm) | 5.75 in (146.1 mm) |
| 2 in / 80-4000-20 | 1.25 to 2 in (31.25 to 50.8 mm) | 5.688 in (144.5 mm) |
| 2.5 in / 80-4000-25 | 1.5 to 2.5 in (38.1 to 63.5 mm) | 6.188 in (157.2 mm) |
| 3 in / 80-4000-30 | 2 to 3 in (50.8 to 76.2 mm) | 6.871 in (174.5 mm) |
| 3.5 in / 80-4000-35 | 2.5 to 3.5 in (63.5 to 88.9 mm) | 7.312 in (185.7 mm) |
| 4 in / 80-4000-40 | 3 to 4 in (76.2 to 101.6 mm) | 7.812 in (198.4 mm) |
| 5 in / 80-4000-50 | 4.5 to 5 in (101.6 to 127 mm) | 8.938 in (227 mm) |
| 6 in / 80-4000-60 | 5 to 6 in (127 to 152.4 mm) | 9.938 in (252.4 mm) |
Selecting the frame and slides
Order by pipe outside diameter: each frame size covers a narrow band, so the size must match the pipe actually on site. The drive is a separate choice among the pneumatic motor, the 110 V electric motor and the 220 V electric motor, and a front drive pinion housing, aluminium collet sets, clamp foot sets and a screw-down bench mount are listed as options. Standard supply is the pinion housing, storage case, hand tools and operating manuals.
Say which job the machine must do. Parting and bevelling use the parting and bevel slides, socket weld removal uses the axial or radial slides, and wheel cutting where no chips may enter the system uses the FME module. Wall thickness above 0.4375 in is outside the datasheet range and should be confirmed before ordering.
How the E.H. Wachs SDSF works
The frame splits in half and closes around the pipe. A drive motor turns the frame around the pipe. A tool block on the frame is fed in by a star wheel at each turn. The tool cuts the pipe and forms the bevel in one operation, with no need to move the pipe.
Where the SDSF is used
- Cutting and bevelling small-bore pipe in place
- Heat exchanger and boiler connections
- Crowded pipe racks
- Socket weld removal
- Counterboring for weld preparation
Selection checklist for the SDSF
- Pipe outside diameter
- Wall thickness
- Pneumatic or electric drive
- Air or power available
- Tool slides needed
- Tooling material, steel or carbide
- Clearance around the pipe
- Size and part number
Installation, commissioning and maintenance notes for the SDSF
Open the frame and place it around the pipe. Close it and clamp it with the self-squaring system. Fit the drive and the tool. Set the feed and start the cut. Clean and oil the machine after use and keep it in its case.
Requesting a quotation for the E.H. Wachs SDSF
Please send the pipe size, the wall thickness, the drive and the tooling. Seven Star LLC serves industrial customers in Oman and the GCC and replies with a quotation based on the information provided.
SDSF pipe capacity
The machine covers 0.84 to 6.625 in outside diameter, 21.3 to 168.3 mm.
SDSF wall thickness
The wall range is 0.062 to 0.4375 in, 1.6 to 11.1 mm.
SDSF cutting speed
The speed is 30 surface ft/min on 2 in pipe and 40 surface ft/min on 4 in pipe.
SDSF feed
The star wheel feed is fixed at 0.0031 in per trip.
SDSF drive options
The drive is pneumatic, or electric at 110 V or 220 V.
SDSF air requirement
The pneumatic drive needs 35 cfm at 90 psi.
SDSF tool slides
Slides are available for parting, bevelling, socket weld removal and counterboring.
SDSF construction
The machine is alloy steel with hardened parts, hard chrome plating and black oxide.
Machine records for the SDSF
Record the tooling used, the hours run and the date of each service.
Choosing the right SDSF drive
Choose the pneumatic drive where compressed air is at hand, and the electric drive where it is not.
Documents and quotation
The SDSF datasheet is available on this page. Other cutting and prepping tools are collected under Pipe Cutting & Bevelling Machines.
Send the pipe OD and wall, the material, the operation required, the preferred drive and the available air or electrical supply to receive a quotation.
Datasheets & Documents
- Datasheet E.H. Wachs SDSF Split Frame datasheet (0224) Download
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About brand
E.H. Wachs is an American maker of portable pipe cutting, bevelling and machining tools, founded in 1883 in Chicago by Edward H. Wachs as a steam fitting firm. The company later built the Wachs vertical steam engine, then moved into portable pipe machining tools and valve exercisers. Family-owned for four generations, E.H. Wachs now operates as a division of ITW (Illinois Tool Works) in Lincolnshire, Illinois.
Seven Star LLC is an independent supplier in Muscat. We list Wachs machines for pipeline, power and process contractors in Oman and the GCC.
E.H. Wachs company profile
| Founded | 1883, Chicago, by Edward H. Wachs |
|---|---|
| Headquarters | Lincolnshire, Illinois |
| Ownership | Division of ITW (Illinois Tool Works) |
| Product families | SDSF and LDSF split frame pipe cutters, Trav-L-Cutter pipe milling machines, SDB pipe bevellers, EP ID-mount end prep machines, Guillotine pipe saws, valve exercisers |
Milestones
- 1883: Edward H. Wachs starts the business in Chicago.
- 2009: The Wachs family sells the company after four generations.
E.H. Wachs product series
Split frame cutters include the SDSF small diameter split frame and the LDSF large diameter split frame for 60 to 120 in pipe. The Trav-L-Cutter SD is a portable pipe milling machine.
End prep machines include the EP 424 AutoFeed ID-mount machine and the SDB 206/2 small diameter beveller.
Split frame cutters clamp around the pipe and cut and bevel in one pass, while end prep machines mount inside the pipe to face and bevel the end. Cold cutting avoids sparks and heat, which is important in live plants and around hydrocarbons.
Machines are selected by pipe diameter and wall thickness, material and the drive power available on site.
Where E.H. Wachs machines are used
Cold cutting and bevelling of pipe in live plants and hazardous areas, pipeline repair and decommissioning.
E.H. Wachs products we list
Ordering E.H. Wachs machines: what we need
Send the model, pipe diameter and wall, material, bevel profile and drive (pneumatic, hydraulic or electric).
Facts checked against published E.H. Wachs company histories, October 2026.
Browse E.H. Wachs products by category: Pipe Cutting & Bevelling Machines.
FAQ
Questions about the E.H. Wachs SDSF Small Diameter Split Frame Pipe
Answers from our engineering team on installation, compatibility and integration.
01What pipe range does the SDSF cover?
Tube and pipe from 0.84 to 6.625 in OD (21.3 to 168.3 mm), nominal 0.5 to 6 in, with wall from 0.062 to 0.4375 in.
02Can it remove socket welds?
Yes. Optional axial and radial socket weld slides remove the weld without damaging the base material.
03What power does it run on?
Pneumatic at 35 cfm and 90 psi, or an electric motor at 110 V 10 A or 220 V 5 A.
04Is there a chipless cutting option?
Yes, the optional FME wheel-cutting slide cuts without letting chips enter the pipe.
05How is the right frame size chosen?
Nine sizes from 1 in to 6 in cover 0.5 to 6 in pipe in bands; pick the frame whose range includes the pipe OD, using part numbers 80-4000-10 to 80-4000-60.
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