Enduro Bearings B 543 2RS MAX Headset Bearing – 1 9/16″x2″x9/32″ | 40x51x7 mm – 1.5″ EC49/40

B 543 2RS MAX – 1-1/2 Max-Type Headset Bearing

(1-9/16 2 x 9/32 inch) 1-1/2 Full-Complement, Max-Type Bearing for Internal headsets, featuring 52100 High-Carbon Chromium alloy races paired with grade 10 balls. Enduro line of headset bearings starts with Black oxide treated Chromium steel races, steps up to full 440C stainless steel, and the top of the line is, lifetime-guaranteed, XD15 aerospace-stainless races and balls). They are always engineered with the largest balls possible, feature dual-lip seals riding in a micro-groove (labyrinth) and areilled 90%ith high pressure water proof grease for the ultimate protection against sweat and the elements. Enduro Angular Contact (A/C) bearings are designed so all balls are evenlyngaged to spread the force over a larger surface area, minimizing wear and maximizingife.

Specifications:
• Inner diameter: 1 9/16 inch mm
• Outer diameter: 2 inch mm
• Width: 9/32 inch mm
• Static load: 1465 lbf / 6.5 kN
• Weight: 28.77 g

Enduro bearing code key:
Seal Types:
2RS – 2 Rubber Seals
LLB – Medium Contact Seal. Well suited for Hubs
LLU – Full Contact Seal. Better for suspension pivots
VV – Light Contact Seal
SRS – Snap Ring Seal
LLU/LLB – Dual Seal Bearing (One seal type per bearing side)

Treatments / Coatings:
BO – Black Oxide Treatment. Corrosion resistant coating

Bearing Types:
(6)801 – 6 Single Row Bearing
6(3)801 – 3 Wide Single Row Bearing
(3)801 – 3 Double Row Bearing
6(1)801 – 1 ABEC-5 Bearing
(7)1801 – 7 Angular Contact Bearing. Specifically designed for hubs
(S)6801 – S Stainless steel bearing
MR – Metric Roller
MRA – Metric Roller Angular Contact. Specifically designed for hubs
SMR – Stainless Steel Metric Roller
SMRA – Stainless Steel Metric Roller Angular Contact
DR – Double Row
A5 – ABEC-5 Bearing
ACB – Angular Contact Bearing
Radial – Radial Bearing

Specialty Bearings / Ceramics:
CH – Ceramic Hybrid. ABEC-5 tolerance, LLB Seals, Graphite Nylon retainer.
CO – Ceramic Zero. Comes close to magic ″zero″ rolling resistance number.
CXD – XD-15 Ceramic. Longest lasting, speediest ceramic bearing available
SXD – XD-15 Stainless Steel Bearing
MAX – Max suspension pivot bearing. Designed specifically for suspension pivots.

Races & Flanges:
E – Extended Inner Race
EE – Double Extended Inner Race (extends on both sides)
F – Flanged Bearing
FE – Flanged Extended Inner Race
FO – Flanged Offset Bearing

Shields:
1Z – Single-side Grease Shield
ZZ – Dual Side Grease Shield

Materials:
CC – High Chromium Steel Bearing
SS – Stainless Steel Bearing