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DuraKapp™#7 Babbitt - 35 lb. Ingot$453.60**Minimum order quantity 350 lbs.** ASTM B23 #7 - Most Popular OEM refurbishment LEAD Babbitt for low speed machinery, engines, and generators. 10Sn/75Pb/15Sb, nominal 35 lb. ingots.
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DuraKapp™#7 Babbitt - 1 lb. Regular Bar$16.60ASTM B23 #7 - Most popular OEM refurbishment LEAD Babbitt for low speed machinery, engines, and generators. 10Sn/75Pb/15Sb, nominal 1 lb. bars. VIEW PRODUCT -
DuraKapp™#7 Babbitt - 5 lb. Notch Bar$68.40ASTM B23 #7 - Most Popular OEM refurbishment LEAD Babbitt for low speed machinery, engines, and generators. 10Sn/75Pb/15Sb, 5 lb. notch bars.
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ASTM-B23 Grade 7 Lead Babbitt
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
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Specification |
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ASTM B23: |
Grade 7 |
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QQ-T-90A: |
No. 7 |
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Composition |
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Sn (Tin): |
9.3-10.7% |
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Sb (Antimony): |
14.0-16.0% |
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Pb (Lead): |
Balance |
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Technical Data |
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Melting Temperature Range: |
464-514°F (240-268°C) |
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Pouring Temperature: |
640°F (338°C) |
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Brinell Hardness (@ 68°F / 20°C): |
22.5 |
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Tensile Strength (Chill Cast): |
10,400 psi (72 MPa) |
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Elongation at Break: |
4% |
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Fatigue Strength: |
NA |
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Yield Point, Compression at Temperature: |
@ 68°F (20°C) = 3,550 psi (24.5 MPa); @ 212°F (100°C) = 1,600 psi (11 MPa) |
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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) |
Grade 7 Lead Babbitt Product Variants
DuraKapp™#7 is available in standard forms:
Custom alloys and forms are our specialty. Call Kapp Alloy with your specific project.
Also Order
Click here for DuraKapp™#7 Technical Data Sheet