BACK

It may be descended from the original guide bar concept, but this solid-nose workhorse is still in demand.
The Professional Hard-Top has been thoroughly field tested in the world's toughest hardwood forests. As a result, GB's researchers and technicians have created an incredibly durable hard-nose bar that wins respect from any professional logger.
Tough cutting situations, such as land clearing, stump removal, salvage operations, demolition, etc. call for tough cutting attachments. And, the GB Hard-Top bar is as tough as they come. This high-quality, solid-nose bar is built to withstand the most abusive and abrasive conditions.
The Hard-Top is crafted from solid T-40 steel--a high-tech alloy specified by GB engineers, who work closely with industrial metallurgists to isolate the ideal alloys for various GB guide bar applications.
Furthermore, GB has enhanced the Hard-Top with a brand new hard-facing alloy used in the space industry--NASALLOY 8. A generous deposit of this material is fused to the nose radius. Its fierce resistance to heat and wear guarantee extended life and assure customer satisfaction.

FEATURES:
• One-piece, solid, high-carbon steel body (GB T-40 alloy).
• Laser-cut for precision shape and fit-up.
• New NASALLOY 8 hard facing material extends well beyond nose radius, into transition zone where chain slap erodes rails of ordinary bars.
• Nose radius has been engineered for maximum performance & durability.
• Grooves are individually precision-ground, not mass-milled. This places the groove dead center & unlike milling, creates much smoother rails.
• Ground grooves have rounded gullets for more strength.
• Rails are uniformly induction hardened and tempered.
• Excellent hardness, straightness, durability and overall life.
• Audited for quality and fully guaranteed.

BENEFITS:
• Less friction in rails / strengthened base of each rail.
• Maximum chain and bar life.
• Superior resistance to wear.
• Superior resistance to rail chipping.
• Cutting performance enhanced.
• Consistent groove width.
• Minimizes bar wear in abusive or abrasive conditions and improves performance.
• Strength and resilience.
• New hard-facing alloy, NASALLOY 8, exceeds performance of other materials.