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  • TR flanges are similar to the TF style, but allow for the Taper Lock Bushing to be mounted and removed from the reverse or serration side of the flange
  • The limited torque ratings of the Taper Lock Bushings allow TR flanges to only be used with EPDM or Neoprene sleeves
  • Different bushing sizes are used, so they have different maximum bores than the TF flanges
  • Sizes 6 through 16 are available
Unit of Measure




Coupling Size

N/A 12TR


N/A Coupling Flange


N/A Cast Iron


N/A 17.00 lb


N/A Gray

Bore Type

N/A Bored to Accept 2517 Taper Lock Bushing

Mount Type

N/A Rear

Bushing Required

N/A 2517

Coupling Type

N/A S-Flex

UNC Flange UPC Number

N/A 62290

Dimensional Data

Keyway Size (W x D)

N/A No Keyway

Hub Diameter

N/A 5.750 in146.05 mm

Dimension L

N/A 4.000 in101.60 mm

Outside Diameter

N/A 10.000 in254.00 mm

Overall Length

N/A 8.250 in209.55 mm

Max. Bore (Dimensions ID1/ID2)

N/A 2.500 in64.00 mm

Dimension FL

N/A 1.690 in42.93 mm

Dimension G

N/A 2.310 in58.67 mm

Dimension P

N/A 1.280 in32.51 mm

Dimension R

N/A 2.690 in68.33 mm

Bushing Screw Size

N/A 1/2-13

Cubic inches

N/A 400.00000 in³

Performance Data

Nominal Torque (with EPDM Sleeve)

N/A 7200 in·lb

Max. Speed

N/A 2800.00 rpm

Torsional Stiffness

N/A 27500.00 in·lb/rad

Rated HP at 100 rpm

N/A 11.40 hp

Rated HP at 1,200 rpm

N/A 137.00 hp

Rated HP at 1,800 rpm

N/A 206.00 hp



  • Be sure to determine if the bushing being used has either UNC threads (60°) or British Standard Whitworth B.S.W. threads (55°). In the U.S.A. the UNC type is predominant for both inch and metric bores. Outside of the U.S.A. it is most common to see B.S.W., especially on metric bores.
  • All above data refers to both standard UNC and British Standard Whitworth B.S.W. threads. Flanges are not supplied with screws.
  • Use of a 1210 or 1610 bushing reduces the reserve factor between bushing torque rating and that of the coupling.
  • Taper-Lock® is a registered trademark of Reliance Electric Industrial Company in the United States and Canada. It is a registered trademark of JH Fenner and Co. in the United Kingdom.
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