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Allied Machine
Allied Machine is a Dover, Ohio cutting tool manufacturer known primarily for holemaking and finishing systems. Its portfolio spans replaceable-insert and high-performance drilling, boring, reaming, burnishing, threading, PCD tooling, and engineered special tooling supported by application-focused technical resources.
- Founded: 1941.
- Headquarters: Dover, Ohio, United States.
- Ownership: family owned; founded by Harold E. Stokey.
- Specialties: drilling, boring, reaming, burnishing, threading, PCD and CBN tooling, and engineered specials.
- Common industries: aerospace, automotive, heavy equipment, energy, defense, general machining, and other production metalworking environments.
Company overview
Allied Machine & Engineering was founded in 1941 and is headquartered in Dover, Ohio. The company developed from a United States manufacturing business into a global supplier of holemaking and finishing tooling.
Its identity is closely tied to drilling productivity and cost-per-hole improvement, with reusable holders, replaceable inserts or heads, coolant delivery, geometry selection, and application engineering forming a large part of the product story.
The broader Allied organization also includes product lineage connected with Wohlhaupter boring systems, ALVAN reaming technology, ThreadMills USA, and Superion custom tooling.
Company history
Harold E. Stokey founded Allied Machine & Engineering in New Philadelphia, Ohio, in 1941. Early production included tapered bearing lock nuts and components used in M1 tank assembly during World War II.
Allied entered the spade-drill business in 1965 after developing a universal-style spade drill. That holemaking focus became central to the company and eventually led to the T-A replaceable-insert drilling platform and later generations of drilling systems.
The company expanded beyond drilling through internal development and added product organizations including Wohlhaupter precision boring, Criterion modular boring, Superion custom tooling, ThreadMills USA, and S.C.A.M.I. reaming and roller-burnishing technology.
Product portfolio
Drilling: replaceable-insert, high-penetration, indexable, structural-steel, BTA and deep-hole systems, including T-A, GEN2 T-A, T-A Pro, GEN3SYS XT and XT Pro, 4TEX, Revolution Drill, and Opening Drill.
Boring: Wohlhaupter precision modular boring systems, Criterion modular boring heads and bars, rough and finish boring tools, intermediate modules, master shanks, inserts, and engineered boring specials.
Threading: AccuThread solid-carbide and replaceable-insert thread mills plus ThreadMills USA products and programming support through Insta-Code.
Reaming and burnishing: ALVAN reamers by S.C.A.M.I., replaceable-head and monobloc reaming systems, Superion solid-carbide and PCD tools, and S.C.A.M.I. roller-burnishing systems.
Special and advanced tooling: Superion made-to-order solid-carbide, PCD and CBN drills, end mills, reamers, routers, port tools, multifunction tooling, EcoCut, hydraulic toolholders, and engineered specials.
Brands and product lines
- Allied Machine: the core holemaking and finishing portfolio.
- Wohlhaupter: German-manufactured high-precision modular boring systems.
- Criterion: modular boring heads, boring bars, shank options, and accessories.
- Superion: made-to-order solid-carbide and PCD/CBN tooling.
- ThreadMills USA: thread-milling products within Allied’s threading portfolio.
- S.C.A.M.I. and ALVAN: reaming and roller-burnishing systems.
- T-A, GEN2 T-A, and T-A Pro replaceable-insert drilling systems.
- GEN3SYS XT and 4TEX high-performance holemaking families.
- AccuThread and ThreadMills USA threading systems.
- Wohlhaupter modular boring and finishing systems.
- ALVAN reaming, burnishing, PCD tooling, and engineered special tools.
Headquarters and operations
- Corporate headquarters and principal operation: Dover, Ohio, United States.
- Allied’s public global-location directory lists seven facilities, including four manufacturing locations in the United States and facilities in the United Kingdom, Germany, and India.
- Publicly listed specialized operations include Superion in Xenia, Ohio; ThreadMills USA in Evans, Georgia; Wohlhaupter operations in Germany; and Allied Machine operations in Kingswinford, United Kingdom.
Industries and applications
- Production drilling where insert replacement, holder reuse, coolant delivery, chip evacuation, and cost per hole are central to the process.
- Boring, reaming, burnishing, and threading applications that require the tool assembly, geometry, machine conditions, and finish requirements to be reviewed together.
- Aerospace, automotive, defense, energy, heavy equipment, and general machining programs where application support and repeatable tooling records matter.
- Frequently researched Allied topics include T-A inserts, T-A drill charts, holder compatibility, GEN3SYS XT insert selection, starting cutting data, coolant requirements, and cost-per-hole comparisons.
- Allied publishes catalogs, product literature, cutting data, training resources, and tooling-model resources. Current technical values should be verified against those official materials.
- Mach 10 references Allied product names for identification and independent sourcing education; it does not present this page as an official Allied publication.