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ZA-12

 

 

 

 
                             ZA-12 (Bearing Stock, Solids & Hollows)

ZA-12 is cost effective for O.E.M. and replacement bearings.  It has a longer bearing life than bronze and it prevents shaft or pin damage, because of it's composition.  It embeds foreign particles well and provides emergency dry running performance.  It has excellent machinability and meets ASTM standards.  It has a lead free composition.

    ZA-12
                    a)  Cost Effective for O.E.M. and Replacement Bearings

                    b)  Longer Bearing Life

                    c)  Prevents Shaft or Pin Damage

                    d)  Embeds Foreign Particles Well

                    e)  Provides Emergency Dry Running Performance

                    f)  Excellent Machinability

                    g)  Meets ASTM Standards - Lead Free Composition

Key Benefits

                            DESIGN CONCEPTS - BEARING (PINS)

Design Issues Needle Bearings Steel Bushings Plastic Bushings Spherical Steel Bushings ZA-12 Bushings
1.  Sensitivity to         Pounding                    high low high low low
2.  Sensitivity to lack of lubrication high high low high low
3.  Sensitivity to Contamination very high medium very high medium low
4.  Sensitivity to Misalignment high high low very low medium
5.  Cost high high lowest highest low
6.  Pin Grinding Required yes yes no no no
7.  Technical Risk low low medium low medium
8.  Marketing Risk low low medium low low
9.  OD vs. ID ratio low low low high low
10.  Grease Retention Ability good poor @ $15 and good @ $30 good poor @ $20 and good @ $40 good @ $5
11.  Lube Interval long short long short long
12.  Integral Seal? yes no no yes no

   ZINCALOY OFFERS SUPERIOR PROPERTIES COMPARED TO BRONZE

   RESILIENCE - Protects bearing housings from deformation due to pounding.

    BETTER DRY RUNNING PROPERTIES - Resists damage to shaft if lubrication fails. 

    LOW COEFFICIENT OF FRICTION

    BETTER MECHANICAL PROPERTIES - Especially strength, toughness and hardness.

    BETTER DAMPENING PROPERTIES - Absorbs impact energy well to reduce vibration.

    HIGHER TOLERANCE OF FOREIGN SUBSTANCES - Ability to absorb foreign  particles to 

    avoid shaft damage

    LIGHTER WEIGHT - 32% Lighter.

    FREE MACHINING - Excellent surface finish.

    LONGER BEARING LIFE

    LEAD FREE

 

 

 

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Last modified: November 04, 2004