DONAHUE INDUSTRIES, INC. | A FULL SERVICE INTERNATIONAL METAL COMPONENTS MANUFACTURER
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    • Throw-away Mounting Flanges
    • Threaded Hex Inserts
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    • Fractional Wire Rope Sheave Gauges
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Grinding Wheel Safety Backs Manufacturer​
For Type 6 - Straight Cup Wheel and Type 11 - Flaring Cup Wheel

Donahue-Industries_safety-backs_grinding-wheel-safety-backs-manufacturer_straight-cup-flaring-cup-wheelbacks
Donahue-Industries_safety-backs_grinding-wheel-safety-backs-manufacturer_straight-cup-flaring-cup-wheelbacks-diagram
Part Number Description:
Inch (Metric)
Outside Diameter:
Inch (Metric)
Thread
23A
26AN
27A
29A
29R
6.000" (152.400mm) flaring
6.000" (152.400mm) straight
5.000" (127.000mm) flaring
4.000" (101.600mm) flaring
4.000" (101.600mm) flaring
5.242" (133.147mm)
6.000" (152.400mm)
4.242" (107.747mm)
3.407" (86.538mm)
3.688" (93.675mm)
5/8"-11 UNC-2B
5/8"-11 UNC-2B
5/8"-11 UNC-2B
5/8"-11 UNC-2B
5/8"-11 UNC-2B

See nut options.

Special High Speed

Part Number Description:
Inch (Metric)
Outside Diameter:
Inch (Metric)
Thread
23E14
27E16
29AT
6.000" (152.400mm) flaring
5.000" (127.000mm) flaring
4.000" (101.600mm) flaring
5.242" (133.147mm)
4.242" (107.747mm)
3.407" (86.538mm)
7/8"-14 UNF-2B
3/4 "-16 UNF-2B
5/8"-18 UNF-2B
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  • Home
  • Grinding & Abrasives
    • Abrasive Wheel Inserts
    • Cup Wheel (Spider) Bushings
    • Disc Wheel Inserts
    • Reducing Adapter Bushings
    • Reusable Adapter Kits
    • Safety Backs
    • Throw-away Mounting Flanges
    • Threaded Hex Inserts
  • Wire Rope Sheave Gauge
    • Fractional Wire Rope Sheave Gauges
    • Metric Wire Rope Sheave Gauges
    • How To Use A Wire Rope Gauge
  • Custom Products
    • Hardware Startups
  • Defense Contracting
  • About
  • Contact