Y128PWI-CR DB RBC

Brand - RBC
Item Number - Y128PWI-CR DB RBC
Category - Thin Section Ball Bearing (Y-PWI Series)

Principal Dimensions & Load Ratings (Imperial) :
Maximum Bore Diameter (B) - 8 inch
Minimum Bore Diameter (B) - 7.9988 inch
Maximum Outside Diameter (D) - 9.125 inch
Minimum Outside Diameter (D) - 9.1238 inch
Width (W) - 1.25 (+.000 to -.020) inch
Width (H) - 0.625 (+.000 to -.005) inch
Approximate Diameter (Li) - 8.252 inch
Approximate Diameter (Lo) - 8.846 inch
Inner Ring Radius (C1)*** - 0.031 inch
Outer Ring Radius (C)*** - 0.031 inch
Ball Number - 66 pcs.
Ball Size - 0.3125 inch
Weight - 1.82 lbs
Type of Seal - Synthetic Rubber Seal Retained by Cadmium Plated Spring Steel or Stainless Steel Washer
Radial Limit Load Rating - 70900 lbf
Thrust Limit Load Rating - 32200 lbf
Limit Moment Rating - 89100 lbf-in
Moment Constant - 0.361 per inch
Rated Radial Capacity at 100 RPM** Based on 7500 Hours Average Life* - 4280 lbf
Rated Radial Capacity at 300 RPM** Based on 7500 Hours Average Life* - 2960 lbf
Rated Radial Capacity at 500 RPM** Based on 7500 Hours Average Life* - 2500 lbf
Nominal Preload - 160 lbf

Principal Dimensions & Load Ratings (Metric) :
Maximum Bore Diameter (B) - 203.2 mm
Minimum Bore Diameter (B) - 203.17 mm
Maximum Outside Diameter (D) - 231.775 mm
Minimum Outside Diameter (D) - 231.745 mm
Width (W) - 31.75 (+.00 to -.51) mm
Width (H) - 15.88 (+.00 to -.13) mm
Approximate Diameter (Li) - 209.6 mm
Approximate Diameter (Lo) - 224.69 mm
Inner Ring Radius (C1) - 0.79 mm
Outer Ring Radius (C) - 0.79 mm
Weight - 0.826 kg
Radial Limit Load Rating - 315000 N
Thrust Limit Load Rating - 143000 N
Limit Moment Rating - 1006652 N-cm
Moment Constant - 0.142 per cm
Rated Radial Capacity at 100 RPM** Based on 7500 Hours Average Life* - 19000 N
Rated Radial Capacity at 300 RPM** Based on 7500 Hours Average Life* - 13200 N
Rated Radial Capacity at 500 RPM** Based on 7500 Hours Average Life* - 11200 N
Nominal Preload - 711 N

Description of Suffixes and Prefixes :
Y - Ceramic Balls

Other salient points about this Bearing :
• Mounted in duplex pairs.
• Exposed surfaces except bore are cadmium plated.
• Prepacked with lubricant conforming to MIL-G-25537.

* These ratings are for single bearings.
** Heavy line indicates limiting speeds recommended for sealed bearings; for higher speeds, seals should be removed.
*** Maximum shaft or housing fillet radius which bearing corners will clear.

♦ ♦ Images are for representation purposes only