Y 128 L RBC

Brand - RBC
Item Number - Y 128 L RBC
Also Known As - Y128L
Basic Number - (-128)
Yoke Rollers (without Seal) - Y 128
Yoke Rollers (Sealed and Crowned Outer Ring) - CY 128 L
Category - Yoke Rollers (With Seals and Cylindrical Outer Ring)

Principal Dimensions & Load Ratings (Imperial) :
Nominal Size - 4 inch
Outside Diameter (D) - 4 (+ .000 to - .001) inch
Roller Width (B1) - 2.25 (+ .000 to - .005) inch
Crown Radius (CR) - 30 inch
Nominal Inside Diameter (d) - 1.25 inch
Minimum Inside Diameter (d) - 1.2495 inch
Maximum Inside Diameter (d) - 1.2501 inch
Overall Width (B) - 2.3125 (+.005 to - .010) inch
Oil Hole (H) - 0.125 inch
Speed Limit - 940 rpm
Dynamic Capacity (C) - 30000 lbf *
Static Capacity (C0) - 89550 lbf **
Track Capacity @ 40 Rc - 22000 lbf
Maximum Transition Fit - 1.2496 inch
Minimum Transition Fit - 1.2491 inch
Maximum Press Fit - 1.2508 inch
Minimum Press Fit - 1.2503 inch
Minimum Boss Diameter - 2.62 inch
Approximate Weight - 6.76 lbs

Principal Dimensions & Load Ratings (Metric) :
Approximate Weight (kg) - 3.066 kg

Replaces (Direct Interchange)
McGill - CYR-4-S
KOYO - YCRS-64

Replaces :
RBC - Y128
McGill - CYR4
KOYO - YCR64

Description of Suffixes and Prefixes :
Y - Yoke Style
L - Sealed

Description of Possible Suffixes :
NNW - 2 Jam Nuts & Washer

Other salient points to be noted :
• Axial clamping of the inner ring is recommended

* Normal operating loads should not exceed 50% of the bearing dynamic capacity
** Bearing Static Capacity provided for comparison only

♦ ♦ Images are for representation purposes only