This image represents the series, but may not be the exact part.

71805LLB Enduro Bicycle Angular Contact Bearing Abec5 25x37x7mm

Quick Order Code: 29826

Enduro Abec5 Angular Contact Bearing

Also known as:

7805LLB 71805-2RS 7805-2RS
Availability: 13In stock
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£14.66 £12.22

  Angular Contact Enduro Bearings

Angular Conatct Bearings

Enduro produce a line of Angular Contact (A/C) cartridge bearings specifically designed for hubs. In standard radial bearings, only 3 or 4 balls make contact during the load, at any given time. In Angular Contact (A/C) bearings, ALL balls are engaged and spread the force over a larger surface area, to decrease friction and minimize wear. Wheel play can be adjusted out of the hub providing a more stable wheel, and making it easier to adjust disc brakes while still spinning freely.

  • LLB - Is a double lip seal making light contact, and also rides in a groove making a labrinth seal (reducing friction for less rolling resistance whilst maintaining a good seal, preventing contaminating particles entering the raceways)
  • Red seal indicates preload side - 5-10 lbs of preload required
  • Black Seal indicates side to go against frame
  • 15 Degree Contact Angle

Grade 5 Chromium Steel Balls

High precision balls are within 5/1,000,000″ round. These are military level specification, used for precision equipment. R-64 hardness, of the highest grade.

52100 High Carbon Chromium Alloy Races:

Vacuum de-gassed process for the purest chromium alloy steel, hardened to R-62, extremely tough and very durable. Polished to a mirror finish for ABEC-3 precision and noiseless movement.

The ABEC 5 Standard

To meet the ABEC-5 standard, bearing design must pass all tests, which include noise testing at high RPM, extremely close tolerances for I.D. and O.D., roundness of ball, trueness of the races and micro surface finishes of balls and races.

Graphite/Nylon Ball Retainers

Nylon with graphite retainers are virtually frictionless while providing constant lubrication.

 

Enduro Abec5 BearingsEnduro Angular Contact Anatomy

Angular Contact and Radial Ball Bearing Comparison


More Information
Manufacturer Part Number = 71805 LLB
Weight kg = 0.019200
Brand = ENDURO
UPC = 810191013396
Precision Grade = ABEC 5
Inside Diameter = 25mm
Outside Diameter = 37mm
Width = 7mm
Seals or Shields = LLB = This is a Nitrile material rubber with a steel insert. Rather than the standard 2RS type seal, by machining a groove into the inner race where the seal can rotate with better efficiency and less rolling resistance. Rather than one thick seal lip rubbing on a blunt surface, LLB type utilizes two razor thin sealing lips riding in the groove with light contact. The outside lip keeps the water and contaminates out, while the inner seal retains the grease for smooth function and long intervals between servicing.
Static Capacity (lbs) = 647
Material = 52100 High Carbon Chromium Alloy
Clearance = CN = Standard Internal clearance
Rows of Balls = 1
Image = Image represents the series, but may not be the exact part
Alternative Brand = In the very unlikely event that we should not have available free stock in the listed brand, then a quality brand will be supplied.
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