40 lb antimonial lead ballast weight with two mounting holes
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40 lb Lead Ballast Weight with Mounting Holes – 2–4% Antimonial Lead

Rock Shot Products
SKU:
BALLAST-40-ANT
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Competitor Price: $157.99 Rock Shot Price: $139.99
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Description

40 lb Lead Ballast Weight with Mounting Holes – 2–4% Antimonial Lead

Heavy-duty 39–40 lb lead ballast and counterweight cast in the USA by Rock Shot Products. Made from 2–4% antimonial lead, this weight provides a compact, dense solution for applications where substantial weight is needed in a relatively small footprint.

Two approximately 1/2" diameter mounting holes, spaced approximately 8" center-to-center, make the weight easier to secure to a chassis, bracket, platform, equipment frame, or other suitable mounting location.

Common Applications

  • Race car ballast and chassis weight
  • Go-kart and racing weight
  • Marine and boat ballast
  • Equipment and machinery counterweights
  • Tractor and utility equipment ballast
  • Fabrication and industrial projects
  • Shop and fixture counterweights
  • General-purpose applications requiring compact, dense weight

Approximate Specifications

  • Weight: 39–40 lb each
  • Material: 2–4% antimonial lead
  • Length: 11.5"
  • Top Width: 3.5"
  • Bottom Width: 3-1/8"
  • Thickness: 2.75"
  • Mounting Holes: 2
  • Hole Diameter: Approximately 1/2"
  • Hole Spacing: Approximately 8" center-to-center
  • Made in the USA

Why Antimonial Lead?

The addition of antimony produces a harder, more durable lead alloy than pure lead while retaining lead's high density and compact size. For ballast and counterweight applications where pure lead is not specifically required, this alloy provides an excellent combination of weight, durability and value.

Please Note: These are cast metal products. Surface texture, casting marks, discoloration, minor oxidation, dimensions and exact weight may vary slightly from piece to piece. These cosmetic variations are normal and do not affect their intended use.

Need More Weight?

We produce these weights ourselves and can accommodate larger quantities. Contact us for bulk quantities or different ballast configurations.

Safety Notice: Lead and lead alloys can expose you to lead, which is known to cause serious health effects. Wash hands thoroughly after handling and keep away from children. Use appropriate precautions when drilling, cutting, grinding, melting or otherwise modifying lead products.