Motor Base Specifications
Materials, frame compatibility, adjustment range and finish options for MACHINING Force adjustable industrial motor bases.
Engineered for every drive class
Every motor base ships to a documented material, dimensional and finish standard. The table opposite lists the typical envelope; custom sizes, hole patterns and coatings are quoted to your drawing.
Material
Cast iron ASTM A48 Class 30/35 or fabricated steel ASTM A36
Grey iron castings deliver vibration damping and long-term dimensional stability; ASTM A36 welded steel is used for large-frame and heavy cyclic-load bases.
NEMA compatibility
Frames 48, 56, 143T through 449T
Standard hole patterns for the full NEMA T-frame range. IEC frames 63 – 355 supplied on request.
Mounting type
Fixed, sliding/adjustable, hinged/pivoting, or conversion
Choose fixed for direct-coupled drives, sliding for V-belt tensioning, hinged for gravity self-tensioning, or conversion for cross-frame motor upgrades.
Adjustment range
1.5" to 12" (38 mm to 305 mm) center distance
Fine-thread jackscrews deliver repeatable, incremental belt tensioning without disturbing motor alignment.
Surface finish
Shot blasted + primer (cast) · painted or mill finish (steel)
Substrate is cleaned to SSPC-SP6 before priming so shop and field topcoats bond reliably in wet or corrosive environments.
Fastener grade
Grade 8.8 / Grade 5 tensioning bolts with locking nuts
High-tensile hardware with locking nuts prevents belt-tension loss from vibration on high-cycle industrial drives.
Max load capacity
Up to 5,000 lbs (2,268 kg) depending on size
Rated for continuous motor and belt-pull loads. Larger custom bases are engineered to project drawings.
Corrosion protection
Epoxy paint, hot-dip galvanized, or stainless steel
Selectable per operating environment — indoor, washdown, marine, food & beverage, or outdoor exposed installations.
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