Bull's Eye Tolerance™

A new standard in bearing thickness consistency.

KING'S TECHLAB - EXCEED AND EXCEL

TechLab is our starting point for exploring and developing new technologies. It’s where our new products and features are designed, tested and validated.

Our TechLab R&D culture focuses on constant analysis of what can be done to support ever increasing race engine loads, and how to improve bearing durability.

One of those technologies is pMax-Black™.

pMaxBlack™ combines a unique tri-metal structure with advanced surface processes to deliver superior load capacity.

KING'S TECHLAB - EXCEED AND EXCEL

TechLab is our starting point for exploring new technologies. It’s where our new products and features are designed, tested and validated.

Our TechLab R&D culture focuses on constant analysis of what can be done to support ever increasing race engine loads, and how to improve bearing durability. One of those technologies is Bull’s Eye Tolerance™.

Typical race bearings are manufactured to meet the industry’s traditional +/- 0.00025 ” wall thickness tolerance. But race engine builders often prefer narrow, more specific oil clearances with far more tolerance control.

To achieve the right clearance, they compensate for bearing thickness inconsistencies by grinding cranks “fat” or “thin”, adjusting the housing bore, or purchasing multiple sets to “fish” for shells. The process is time consuming, costly and tedious.

Bull’s Eye Tolerance™ outperforms the industry’s wall thickness tolerance,
ensuring the least thickness variation shell-to-shell. 

THE NEW TOLERANCE STANDARD

King listened to its engine building customers and responded with Bull’s Eye Tolerance™

Bull’s Eye Tolerance™ is a production technology developed by King. It combines highly accurate machining, overplating, and computerized wall thickness monitoring that adjusts the process on-the-spot.

Bull’s Eye Tolerance™ outperforms the industry’s wall thickness tolerance, ensuring the least thickness variation shell-to-shell. The outcome: A new standard in bearing thickness consistency.

With Bull's Eye Tolerance™

  • No more multiple set purchases or “fishing” for bearings to reach right clearance
  • No need to grind cranks “fat” or “thin”
  • No need to adjust housing diameter
  • Less taper across the bearing face

Bull's Eye Tolerance on YouTube

Bull's Eye Tolerance™ benefits:

  • 24% greater load capacity
  • 17% more fatigue resistance
  • Compatible with all crankshafts

KING TECHLAB

Today, King’s research & development department (TechLab) is recognized as a leading technology authority in bearing science.

Bulls Eye™
Bull's Eye Tolerance
PERFECT CLEARANCE IN EVERY SET

Outperforms the industry’s wall thickness tolerance, ensuring the least thickness variation shell-to-shell.

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U-Groove™
u-groove
Greater load surface

A 90⁰ oil groove shape, keep oil flow intact, increases bearing load capacity by expanding the surface area.

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Elliptix™
Elliptix
Improved oil ingress

A newly designed oil slot/oil hole hybrid that improves oil ingress, without affecting the bearing’s surface.

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Radialock™
Radialock
Optimal crush height and heat transfer

An optimal crush height value obtained from an optimization process of each performance bearing crush height

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Eccentrix™
Eccentrix
Superior hydrodynamic lubrication

An optimized eccentricity value reached through elasto-hydrodynamic analysis and dynamic calculations.

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SmartLug™
SmartLug
Optional lug design

Prevents lug generated oil leaks while achieving better load capacity and oil film distribution.

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Dowel Hole
Additional Stability for the Shell

Enables adding a locating pin, thus improving bearing stability particularly in aluminum housing, that may be compromised by excessive housing expansion and loosing bearing press fit, that occurs in extreme heat conditions.

Force-105
Force 105 Polymer
Extreme Load Capacity

Silver based overlay containing solid lubricant additives distributed throughout the silver matrix. For extreme load engines.

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pMaxBlack™
pMaxBlack
Superior load capacity

Overlay features proprietary nano-scaled hardening process producing superior load capacity.

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Narrowed
Narrowed
Narrowed Bearing Length

Enabeling to clear large filet cranks.

NitroKote™
nitrokote
Top Fuel polymer composite matrix

Polymer coated bearings, designed to withstand the metal-to-metal contact and extreme loading from 10,000 HP Top Fuel engines.

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Lead free
Lead Free
Environmentally safe composite

A lead-free bearing material prioritizes environmental sustainability and safety, utilizing alternative compounds to achieve optimal performance in diverse applications.

pMaxKote™
pMaxKote
Factory applied polymer coating

Inhouse developed Polymer coating for race applications, enhances seizure & wear resistance, with no added thickness.

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Aluminum Based
aluminum base
Bi Metal Aluminum material

Lead free Aluminum based material used for low to heavy load engines

Copper Based
Copper Based
Tri-Metal Copper based material

Leaded or Lead Free tri layers bearings for low to heavy load engines.

SilverCore™
silvercore
Extreme Load Capacity

Silver based overlay containing solid lubricant additives distributed throughout the silver matrix. For extreme load engines.

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ManganX™
ManganX
StrengthenedAluminum

An aluminum alloy strengthened by addition of Manganese and Chromium (Mn, Cr), Used for high load applications.

Alecular™
allecular
Bi Metal high Performance

HP-developed mainly for drag race and monster truck applications using nodular cast iron crankshafts.

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XPC
SUPERIOR WEAR RESISTANCE

XPC features a nano-composite polymer coating, applied over the pMaxBlack™ overlay, enhancing wear resistance without changing the bearing’s original precision wall thickness dimension.

Polymer Coated
Polymer Coated
Polymer coating

Factory Applied Nano-composite Polymer Coating – With No Added Thickness.

Tri-M™
babbit
Babbit Based overlay

Classical Babbit overlay for medium load engines

Tri-M+™
babbit plus
Enhanced Babbit Overlay

Strengthened Babbit overlay for medium and high load engines.

Sputter
PVD Coating

Lead free material plated by Physical Vapor Deposition for extreme loads.