1-1/16" G100 Carbon Steel Pinball Replacement Balls 

Introduction

The PGN Bearings 1-1/16" G100 carbon steel balls are a replacement option for pinball machines compatible with the approximately 27 mm standard diameter. With a smooth surface and a listed nominal weight of 2.849 oz per ball, they are sized to travel through ramps, tracks, launchers, and other mechanisms designed for this ball format.

Manufactured from carbon steel and classified as G100 precision, these balls provide consistent geometry for arcade-machine maintenance, vintage pinball restoration, and replacement of units showing corrosion, scratches, or impact marks. Selecting the correct ball helps preserve the intended interaction with the machine mechanisms and playfield.

The five-piece package is convenient for arcade operators, restoration shops, collectors, and owners who want spare balls available for future maintenance. Before installation, confirm the diameter and weight specified by the machine manufacturer, as some games may use special balls or different quantities.

Hero Product Snippet

Set of five 1-1/16" (approximately 27 mm) G100 carbon steel balls with smooth surfaces for replacement in compatible pinball machines and mechanical devices.

Recommended Applications

• Pinball machines compatible with 1-1/16" balls
• Vintage arcade-machine restoration
• Preventive pinball maintenance
• Replacement of corroded, scratched, or damaged balls
• Spare inventory for arcades and repair shops
• Testing compatible pinball ramps, tracks, and launchers
• Custom recreational projects
• Mechanical assemblies requiring a 27 mm G100 carbon steel ball

Diameter Used in Compatible Pinball Machines

The nominal 1-1/16" size corresponds to approximately 27 mm. This diameter is used in many pinball machines, but the equipment specification should be confirmed before replacement.

A ball with an incorrect diameter may not travel properly through ramps, guides, openings, launchers, or return mechanisms. Verify whether the machine uses conventional balls, special-purpose balls, or a combination of different types on the same playfield.

Smooth Surface for Playfield Movement

PGN describes its carbon steel balls as having smooth surfaces without flats, pits, soft spots, or cuts. A uniform surface supports movement through compatible tracks and ramps.

Balls with corrosion, deep scratches, or impact marks should be inspected before use. Surface irregularities may alter movement and increase abrasive contact with the playfield and its components.

G100 Precision

G100 identifies the precision class of the balls. This classification provides a reference for geometric uniformity and allows the product to be compared with the requirements of the machine or another mechanical assembly.

The grade alone does not determine compatibility. Diameter, weight, material, and surface condition must also match the equipment requirements.

Carbon Steel Construction

Carbon steel provides good mechanical strength and wear resistance for compatible applications. Its mass also contributes to the movement expected in pinball mechanisms designed for this type of ball.

The material is not stainless. Exposure to moisture, fingerprints, or improper storage may contribute to oxidation, making cleaning, drying, and protected storage important.

Weight and Mechanism Behavior

Each ball has a listed nominal weight of 2.849 oz, equivalent to approximately 80.789 g. The five balls represent approximately 403.945 g of combined metal weight, excluding packaging.

Weight influences launching, speed, return, and interaction with machine components. Do not replace the ball with a visually similar product without confirming both its dimensions and mass.

Cleaning and Storage

Before installation, clean each ball using a procedure compatible with carbon steel and dry the surface completely. Avoid abrasive products or materials that could scratch the finish.

Keep spare balls in a dry location protected from condensation and corrosive agents. A suitable temporary protective product may be used during storage but should be removed before placing the ball on the playfield.

Key Features

• 1-1/16" nominal diameter, approximately 27 mm
• Carbon steel construction
• G100 precision grade
• Smooth and uniform surface
• Nominal weight per ball of 2.849 oz, approximately 80.789 g
• Approximate combined ball weight of 403.945 g
  
• Intended for dimensionally compatible pinball machines
• Suitable for maintenance and restoration
  

FAQ

Do these balls fit every pinball machine?

Not necessarily. Many pinball machines use 1-1/16" balls, but confirm the diameter, weight, and ball type specified by the manufacturer.

How many balls are included?

SKU SB-1-1/16-CARBON-G100/5 contains five balls.

What is the diameter of each ball?

Each ball has a nominal diameter of 1-1/16", listed by PGN as approximately 27 mm.

How much does each ball weigh?

The listed nominal weight is 2.849 oz per ball, equivalent to approximately 80.789 g.

When should a pinball be replaced?

Consider replacement when the ball shows corrosion, deep scratches, irregular areas, or damage that may affect movement or contact with machine components.

How can I keep the balls from rusting?

Keep them clean and dry, avoid prolonged exposure to moisture, and store spare balls in protected packaging. Carbon steel does not provide the corrosion resistance of stainless steel.