Bluffton

Electrical Specifications

• Single or Three Phase Design
• Single speed or multi speed capability
• 2, 4, 6, 8, 12 pole motors (3450, 1725, 1140, 850, 540)
• Standard 115/230 volt single phase or 230/460 volt three phase
• Continuous duty, continuous air over, or intermittent duty
• Horsepower range available 1/6 to 5hp
• 40°C, 50°C, or 60°C ambient
• Insulation system available: Class B, Class F, or Class F inverter duty
• Equipped with automatic, manual, or no thermal protection, depending upon the application
• Centrifugal mechanical starting switch or Solid State Switch
• Available in high starting torque, capacitor start designs, or normal starting torque three phase designs
• Built to agency specifications by one or more of UL, CSA, NEMA, NEC and/or CE
• Fixed rotation, reversible, or instantly reversible (using Bluffton’s patented Inst-O-Verse switch)

Mechanical Specifications

• Face mounted NEMA C-face, square flange, or other custom flanges made of cast iron or aluminum
• Rigid base, resilient base, or belly band mounting
• Open, Drip proof, TEFC, or TENV construction
• Permanently lubricated ball bearing construction systems
• Shaft making capability using standard carbon steel, stainless steel, or stress proof steel, up to over an inch in diameter
• Standard 5/8″ shaft diameter with keyway on 56 frame motors
• Standard 1/2″ shaft diameter with flat on 48 frame motors
• Custom shaft lengths with a maximum length of 22″
• Connections can be made at a terminal board, conduit box, or leads or cords of various styles

Electrical Specifications

• Single or Three Phase Design
• Single speed or multi speed capability
• 2 & 4 pole motors (3450, 1725 RPM)
• Standard 115/230 volt single phase or 230/460 volt three phase
• Continuous duty, continuous air over, or intermittent duty
• Horsepower range available 1/20 to 1/2hp
• 40°C ambient
• Insulation system available: Class B or Class F
• Equipped with automatic, manual, or no thermal protection, depending upon the application
• Relay starting or Solid State Switch
• Available in high starting torque, capacitor start designs, or normal starting torque three phase designs
• Built to agency specifications by one or more of UL, CSA, NEMA, NEC
• Fixed rotation or reversible

Mechanical Specifications

• Face mounted or other custom flanges made of cast iron or aluminum
• Rigid base, resilient base, or thru bolt mounting
• Open, Drip proof, TEFC, or TENV construction
• Permanently lubricated ball bearing construction systems
• Shaft making capability using standard carbon steel, stainless steel, or stress proof steel up to 1/2″ shaft diameter
• Standard 1/2″ shaft diameter with flat on 48 frame motors
• Connections can be made at a terminal board, conduit box, leads or cords of various styles

General Purpose Explosion Proof

• Approved Operating Environments
– Class I Group C: Ether, ethylene, and other similar gases
– Class I Group D: Gasoline, propane, ammonia, and other similar gases
– Class II Group E: Metal dusts, including magnesium and others
– Class II Group F: Coal dust, along with coke dust and carbon black
– Class II Group G: Grain dust

• Specifications
– Single or three phase
– 3/4 HP – 3 HP
– 3450 RPM, 1725 RPM or 1140 RPM
– Rigid base and/or NEMA C-face mountings, with keyed or threaded shaft
– Available in 36, 48, and 56 frame designs
– Ball bearings, automatic reset thermal protection, connector
leads or cord available
– Conduit box kit for hazardous locations

Right Angle

Worm gearing is most often utilized for right angle systems. Worm gear reductions of up to 70 to 1 per stage are common and compare to a maximum of 5 to 6 to 1 in small size (single stage) helical or spur gear parallel reduction. The sliding action of the worm gear engagement does result in a lower noise level, particularly when compared to a spur gear reduction. Bluffton Motor Works uses precision cut, induction hardened steel gears with the worm gear cut integral with the motor shaft. The system uses ball bearings in the motor, and sleeve bearings or needle bearings in the gearcase.

Parallel Shaft

The efficiency per stage of parallel shaft gearing is higher than that of worm gearing and although either method may be used to obtain a desired reduction, the choice of a parallel shaft gearmotor will usually permit the use of a smaller motor. Helical gearing will normally run more quietly than spur gearing particularly in wider gears where progressive engagement of the gear teeth is more effective. Bluffton Motor Works uses precision cut, induction hardened steel gears with a helical gear used on the first stage and spur gears used on additional stages in parallel shaft gearmotors. The bearing system uses ball bearings in the motor, and sleeve bearings needle bearings in the gearcase.