Enduro Bearings Deep Groove Ball Bearing 688 8 mm x 16 mm x 5 mm

Item number: 57539
Deep Groove Ball Bearing 688 8 mm x 16 mm x 5 mm - universal/type 2
Deep Groove Ball Bearing 688 8 mm x 16 mm x 5 mm - universal/type 1
  • 100 day return period
  • Online since 1998
  • Trusted Shop 4.89 / 5.00

Carefully manufactured, highly precise: the 688 bearings by Enduro Bearings


You can choose between ABEC 3 steel bearings (type 1) and MAX bearings (type 2).

ABEC 3 bearings from Enduro Bearings feature 10th-degree chrome steel balls that are twice as round as the industry standard, and manufactured to the highest standard. The treads are made of a 52100 carbon chrome steel alloy that is vacuum-generated and then hardened for extra strength and durability. A high-gloss polish ensures precision and low noise.

MAX bearings are characterised by a 35 to 40 % higher load capacity than standard radial bearings. For 20 years Enduro Bearings has been manufacturing them specifically for use on mountain bike shocks. As its name indicates, MAX bearings are fitted with the maximum possible number of balls. The grooves in the races are deeper to accommodate the multiple lateral turning forces at the MTB rear pivot.

Specifications:

Dimensions (Inner x Outer x Width):
8 mm x 16 mm x 5 mm
Designation:
688

Models:

Type 1:
Design:
deep groove ball bearings
Tolerance:
ABEC 3
Recommended Use:
hubs, bottom brackets, headsets
Inner Race Material:
steel (52100)
Outer Race Material:
steel (52100)
Ball Material:
steel
Seals:
LLB
Basic static load rating:
0.6 kN (135 lbs)
Manufacturer Number:
688LLB

Type 2:
Design:
deep groove ball bearings
Tolerance:
ABEC 3 / ABEC 1
Recommended Use:
Suspension pivots, shocks
Inner Race Material:
steel (52100)
Outer Race Material:
steel (52100)
Ball Material:
steel
Seals:
LLU
Basic static load rating:
0.9 kN (210 lbs)
Manufacturer Number:
688LLUMAX

Features:

Type 1:
  • ABEC 3 bearings with riveted steel ball cage for more durability
  • chrome steel balls 10th degree = circularity is 10/1,000,000"
  • race grooves made of carbon-chrome steel alloy, heat and cold treated (down to -190° C), minimum hardness Rockwell HRC 62, polished
  • LLB: widely used seal type made of nitrile rubber with steel insert, in a groove in the inner race (labyrinth bearing), two super thin sealing lips; the outer one keeps out water and contaminants, the inner one retains grease
  • Level 3 in the rating of the Annular Bearing Engineer's Committee (ABEC) in terms of manufacturing tolerances and noise development

Type 2:
  • MAX bearing (MAX = maximum number of balls, without cage or partitions) with 35 % higher load capacity than standard bearings and reduced ease of movement
  • chrome steel balls 10th degree = circularity is 10/1,000,000"
  • race grooves made of carbon-chrome steel alloy, heat and cold treated (down to -190° C), minimum hardness Rockwell HRC 62, polished
  • LLU: Seal type with double lip, in a groove in the inner race; particularly resistant to dirt and dust due to increased pressure, 90% grease filling rate (Almagard Extra High Pressure Grease)
  • Level 1 rating from the Annular Bearing Engineer's Committee (ABEC) in terms of noise, manufacturing tolerances correspond to level 3

Contents:

  • 1 x Enduro Bearings 688 8 mm x 16 mm x 5 mm ball bearing

Weight:

  • universal/type 1: 3,7 g
  • universal/type 2: 3,9 g

Models:

  • universal/type 1, out of stock
    2.59€
  • universal/type 2, out of stock
    4.32€

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