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  1. DuraKapp™#7 Babbitt - 1 lb. Regular Bar
    DuraKapp™#7 Babbitt - 1 lb. Regular Bar
    $9.30
    ASTM B23 #7 - Most popular OEM refurbishment LEAD Babbitt for low speed machinery, engines, and generators. 10Sn/75Pb/15Sb, nominal 1 lb. bars. VIEW PRODUCT
  2. DuraKapp™#7 Babbitt - 6 lb. Notch Bar
    DuraKapp™#7 Babbitt - 6 lb. Notch Bar
    $52.65
    ASTM B23 #7 - Most Popular OEM refurbishment LEAD Babbitt for low speed machinery, engines, and generators. 10Sn/75Pb/15Sb, nominal 6 lb. notch bars. VIEW PRODUCT
  3. DuraKapp™#7 Babbitt - 35 lb. Ingot
    DuraKapp™#7 Babbitt - 35 lb. Ingot
    $289.60
    ASTM B23 #7 - Most Popular OEM refurbishment LEAD Babbitt for low speed machinery, engines, and generators. 10Sn/75Pb/15Sb, nominal 35 lb. ingots. VIEW PRODUCT

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DuraKapp™#7 Babbitt is a general purpose, low speed, Lead-based Babbitt with good tensile and compression strengths under shock, load, pounding, and vibration. Kapp Alloy’s unique Precision Microcasting™ process, combined with high purity virgin raw materials, results in the world’s strongest, most ductile Lead-based Babbitt.

 

DuraKapp™#7 Babbitt meets or exceeds the specifications for ASTM #7 Babbitt —also known as Heavy Pressure, Grade 7, or QQ-T-390A No. 7 Babbitt. We back all of our products with a 100% satisfaction guarantee or your money back.

 

Applications

  • Specifically designed for use in slower speed, heavy load and pressure settings in small or large bearings
  • Especially useful in older equipment to conform to scored or imperfect shafts
  • Refurbishing Grade 7 bearings in heavy load and pressure applications in low speed shafts and drives. Historically found in equipment running slowly and continuously with little lubrication or maintenance
  • Older slower speed rollers, drives, motors, and engines
  • Air compressors
  • Hydraulic pumps
  • Paired with KappaTinning™ Compound and Kapp CopperBond™ Flux

Properties

Specification    

ASTM B23:

Grade 7

QQ-T-90A:

No. 7

 

Composition

Sn (Tin):

9.3-10.7%

Sb (Antimony):

14.0-16.0%

Pb (Lead):

Balance

 

Technical Data

Melting Temperature Range:

464-514°F (240-268°C)

Pouring Temperature:

640°F (338°C)

Brinell Hardness (@ 68°F / 20°C):

22.5

Tensile Strength (Chill Cast):

10,400 psi (72 MPa)

Elongation at Break:

4%

Fatigue Strength:

NA

Yield Point, Compression at Temperature:

@ 68°F (20°C) = 3,550 psi (24.5 MPa); @ 212°F (100°C) = 1,600 psi (11 MPa)

Johnson’s Apparent Elastic Limit:

@ 68°F (20°C) = 2,500 psi (17.2 MPa); @ 212°F (100°C) = 1,350 psi (9.3 MPa)

 

Product Variants

DuraKapp™#7 is available in standard forms:

  • 35 lb. (15.9 kg) ingots
  • 6 lb. (2.7 kg) notch bars
  • 1 lb. (0.5 kg) bars

Custom alloys and forms are our specialty. Call Kapp Alloy with your specific project.

                     

Also Order

 

Click here for DuraKapp™#7 Technical Data Sheet

 

Click here for DuraKapp™#7 Safety Data Sheet

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