Enduro Bearings Deep Groove Ball Bearings - 6903 17 mm x 30 mm x 7 mm

Item number: 57557
1
1
from 5.03€

excl. shipping cost
to the delivery destination: USA

Availability:
Choose model
Quantity:

Delivery to USA is not possible.

Enduro Bearings Deep Groove Ball Bearings - 6903 17 mm x 30 mm x 7 mm - universal/type 2
Enduro Bearings Deep Groove Ball Bearings - 6903 17 mm x 30 mm x 7 mm - universal/type 1
  • 100 day return period
  • Online since 1998
  • Trusted Shop 4.86 / 5.00

Thoroughly made for high precision: the 6903 bearings by Enduro Bearings


Choose between ABEC 3 steel bearings (Type 1), MAX bearings (Type 2) and stainless steel bearings (Type 3).

ABEC 3 bearings by Enduro Bearings come with high precision balls that are within 10/1,000,000" round, twice as round as the industry standard, at its highest level. 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.

Designed specifically for suspension pivots, Enduro Bearings pioneered MAX type bearings almost 20 years ago for bicycles to address the challenges associated with mountain bike pivots. These bearings have 35-40 % more load capacity than standard radial bearings. This is accomplished with a special design where the maximum number of balls is inserted into the bearing. The race grooves are deeper on these bearings for more lateral support for the twisting and multiple forces associated with mountain bike pivots.

Enduro Bearings manufactures some series of bearings using 440C stainless steel balls and races. This material provides maximum corrosion resistance in applications and environments where critical. Stainless steel has 20 % less load capacity than the 52100 chromium steel, used in most of the Enduro Bearings bearings, but with far superior corrosion resistance. When the rain won't go away, and your bicycle is more often used as a boat rather than a land craft, you may want to consider 440C stainless steel bearings. While a little softer than chromium bearing steel, 440C stainless steel is a good alternative in constant wet conditions, or where sweat becomes a problem such as headset bearings.

Specifications:


Dimensions (Inner x Outer x Width): 17 mm x 30 mm x 7 mm
Designation: 6903

Models:


Type 1:
Design: deep groove ball bearing
Tolerance: ABEC 3
Recommended Use: hubs, bottom brackets, headsets
Inner Race Material: steel (52100)
Outer Race Material: steel (52100)
Ball Material: steel
Seal: LLB
Static Capacity: 2.1 kN (477 lbs)
Manufacturer Part Number: 6903LLB

Type 2:
Design: deep groove ball bearing
Tolerance: ABEC 1
Recommended Use: suspension pivots, rear shocks
Inner Race Material: steel (52100)
Outer Race Material: steel (52100)
Ball Material: steel
Seal: LLU
Static Capacity: 3.4 kN (763 lbs)
Manufacturer Part Number: 6903LLUMAX

Type 3:
Design: deep groove ball bearing
Tolerance: ABEC 3
Recommended Use: hubs, bottom brackets, headsets
Inner Race Material: stainless steel (440C)
Outer Race Material: stainless steel (440C)
Ball Material: stainless steel (440C)
Seal: LLB
Static Capacity: 1.7 kN (381 lbs)
Manufacturer Part Number: S6903LLB

Features:


Type 1:
- ABEC 3 bearing with riveted steel retainer for toughness
- grade 10 chromium steel balls = 10/1,000,000" tolerance of sphericity
- 52100 high carbon chromium alloy races with heat treatment followed by cryogenic treatment (310° Fahrenheit (-190° C)), hardened to at least Rockwell HRC 62, polished
- LLB: most popular seal type, Nitrile material rubber with a steel insert; groove in the inner race where the seal can rotate (labyrinth seal), two razor thin sealing lips: the outside lip keeps the water and contaminates out, while the inner seal retains the grease
- ranked ABEC 3 by Annular Bearing Engineer's Committee for manufacturing tolerances and noise testing

Type 2:
- MAX = maximum number of balls, no retainer and fill slot for balls
- in general 35 % more load capacity than retainer type (standard) bearings, do not spin as smoothly
- 52100 high carbon chromium alloy races with heat treatment followed by cryogenic treatment (310° Fahrenheit (-190° C)), hardened to at least Rockwell HRC 62, polished
- LLU: dual lip seal riding in a groove on the inner race, more sealing pressure, ideal for parts that continually come in contact with dirt, sweat, and dust, 90 % grease fill (Almagard Extra high pressure grease)
- grade 10 chromium steel balls = 10/1,000,000" tolerance of sphericity
- ranked ABEC 1 by Annular Bearing Engineer's Committee for noise testing, ID and OD tolerances and raceways are made to ABEC 3 standards

Type 3:
- stainless steel bearing with superior corrosion resistance, but lower load capacity, use in wet conditions
- grade 10 chromium steel balls = 10/1,000,000" tolerance of sphericity
- LLB: most popular seal type, Nitrile material rubber with a steel insert; groove in the inner race where the seal can rotate (labyrinth seal), two razor thin sealing lips: the outside lip keeps the water and contaminates out, while the inner seal retains the grease
- ranked ABEC 3 by Annular Bearing Engineer's Committee for manufacturing tolerances and noise testing

Contents:


- 1 x Enduro Bearings 6903 7 mm x 30 mm x 7 mm ball bearing

Gewicht:

  • universal/type 1: 17,1 g
  • universal/type 2: 17,6 g
  • universal/type 3: 17,1 g

Models:

in stock 2 to 7 days up to 10 days up to 20 days inform me
  • universal/type 1
    5.03€
  • universal/type 2
    7.14€
  • universal/type 3
    10.08€

Customer Reviews (1)

3

You have questions regarding a product?

+49 2405.450045 +49 2405.450045

Customer Reviews (1)

3.0/5.0
5
0
4
0
3
1
2
0
1
0

Give us your opinion on this product.

by Michael S.  on 05.03.2018
verified purchase

Die Lager machen einen guten Eindruck und sind nach ca. 1.000 KM noch ohne Verschleiß aber leider haben sie minimal Spiel auf der Achse welches die Originalen nicht hatten - die Achse ist nicht eingelaufen! Sonst wären es 5 Sterne geworden.

Is this review helpful?

Give us your opinion on this product.