FLAT SERIES – STEEL Flat-Series-Steel-Schematic


Product Guide
Part Number
Wheel Diameter
A
Wheel Width
B
Standoff Length
C
Standoff Diameter
D
Through Hole
E
Bearing
Auxiliary Seal
Application
Hardened Steel Body
RA200MN
RA200MN 2" 1" .062 OR .094 3/4" 1/2" (1) BGBS N/A MODERATE CONTAMINATION
Hardened Steel Body
RA225MN
RA225MN 2-1/4" 1" .062 OR .094 3/4" 1/2" (1) BGBS N/A MODERATE CONTAMINATION
Hardened Steel Body
RA250MN
RA250MN 2-1/2" 1" .062 OR .094 3/4" 1/2" (1) BGBS N/A MODERATE CONTAMINATION
Carbon Steel Body
R2517BRBW1
R2517BRBW1 2-1/2" 1-3/4" 0.06 1-1/8" 1/2" (2) BGAS (2) NRT HIGH CONTAMINATION
Carbon Steel Body
R25BRBRG
R25BR/BRG 2-1/2" 2-3/8" N/A N/A N/A (2) BGAS (2) NRT HIGH CONTAMINATION
R25BRM2 2-1/2" 2-3/8" 0.97 2" 5/8" (2) BGAS (2) NRT HIGH CONTAMINATION
R25BRMM2 2-1/2" 2-3/8" 0.74 1-3/4" 5/8" (2) BGAS (2) NRT HIGH CONTAMINATION
R25BRR1 2-1/2" 2-3/8" 0.06 2" 1/2" (2) BGAS (2) NRT HIGH CONTAMINATION
R25BRR2 2-1/2" 2-3/8" 0.06 2" 5/8" (2) BGAS (2) NRT HIGH CONTAMINATION
R25BRR3 2-1/2" 2-3/8" 0.06 2" 3/4" (2) BGAS (2) NRT HIGH CONTAMINATION
R25BRU1 2-1/2" 2-3/8" 0.06 1-3/8" 1/2" (2) BGAS (2) NRT HIGH CONTAMINATION
R25BRU2 2-1/2" 2-3/8" 0.06 1-3/8" 5/8" (2) BGAS (2) NRT HIGH CONTAMINATION
R25BRU3 2-1/2" 2-3/8" 0.06 1-3/8" 3/4" (2) BGAS (2) NRT HIGH CONTAMINATION
Carbon Steel Body
2625BG3
2625BG2 2-1/2" 4-1/8" 0.06 1-1/8" 5/8" (2) BGA ---- HIGH SPEED
2625BG3 2-1/2" 4-1/8" 0.06 1-1/8" 3/4" (2) BGA ---- HIGH SPEED
Carbon Steel Body
2625LBGL3
2625LBGL2 2-1/2" 4-1/2" 0.06 1-1/8" 5/8" (2) BGA ---- HIGH SPEED
2625LBGL3 2-1/2" 4-1/2" 0.06 1-1/8" 3/4" (2) BGA ---- HIGH SPEED
Carbon Steel Body
550007
550007 2-1/2" 8" .3 (both sides) 1-1/8" 3/8-16 tapped (2) BGA ---- HIGH SPEED
Carbon Steel Body
R31B1
R31B1 3" 1" 0.13 1-1/8" 1/2" (1) BGAS (2) NRR HIGH CONTAMINATION
R31B2 3" 1" 0.13 1-1/8" 5/8" (1) BGAS (2) NRR HIGH CONTAMINATION
R31B3 3" 1" 0.13 1-1/8" 3/4" (1) BGAS (2) NRR HIGH CONTAMINATION
R31J1 3" 1" 0.48 1-3/8" 1/2" (1) BGAS (2) NRR HIGH CONTAMINATION
R31J2 3" 1" 0.48 1-3/8" 5/8" (1) BGAS (2) NRR HIGH CONTAMINATION
R31L1 3" 1" 1.108 1-1/2" 1/2" (1) BGAS (2) NRR HIGH CONTAMINATION
R31L2 3" 1" 1.108 1-1/2" 5/8" (1) BGAS (2) NRR HIGH CONTAMINATION
R31W1 3" 1" 0.2 1-3/8" 1/2" (1) BGAS (2) NRR HIGH CONTAMINATION
R31W2 3" 1" 0.2 1-3/8" 5/8" (1) BGAS (2) NRR HIGH CONTAMINATION
R31Y1 3" 1" 2.06 1-1/2" 1/2" (1) BGAS (2) NRR HIGH CONTAMINATION
R31Y2 3" 1" 2.06 1-1/2" 5/8" (1) BGAS (2) NRR HIGH CONTAMINATION
R31/BRG 3" 1" N/A N/A N/A (1) BGAS (2) NRR HIGH CONTAMINATION
Carbon Steel Body
2632BD1X
2632BD1X 3" 2-1/8" 0.13 1-1/8" 1/2" (2) BGA N/A HIGH SPEED
2632BD2X 3" 2-1/8" 0.13 1-1/8" 5/8" (2) BGA N/A HIGH SPEED
2632BD3X 3" 2-1/8" 0.13 1-1/8" 3/4" (2) BGA N/A HIGH SPEED
Carbon Steel Body
26306BI3
26306BI3 3" 6" 0.13 1-1/8" 3/4" (2) BGAS N/A Moderate Contamination
Carbon Steel Body
R35BRBRG
R35BR/BRG 3-1/2" 2-3/8" N/A N/A N/A (2) BGAS (2) NRT HIGH CONTAMINATION
R35BR-1 3-1/2" 2-3/8" N/A N/A 1" SHAFT MOUNT (2) BGF N/A MODERATE CONTAMINATION
R35BRP2 3-1/2" 2-3/8" 0.06 2" 5/8" (2) BGAS (2) NRT HIGH CONTAMINATION
R35BRR1 3-1/2" 2-3/8" 0.06 2" 1/2" (2) BGAS (2) NRT HIGH CONTAMINATION
R35BRR2 3-1/2" 2-3/8" 0.06 2" 5/8" (2) BGAS (2) NRT HIGH CONTAMINATION
R35BRR3 3-1/2" 2-3/8" 0.06 2" 3/4" (2) BGAS (2) NRT HIGH CONTAMINATION
R35BRU1 3-1/2" 2-3/8" 0.06 1-3/8" 1/2" (2) BGAS (2) NRT HIGH CONTAMINATION
R35BRU2 3-1/2" 2-3/8" 0.06 1-3/8" 5/8" (2) BGAS (2) NRT HIGH CONTAMINATION
R35BRU3 3-1/2" 2-3/8" 0.06 1-3/8" 3/4" (2) BGAS (2) NRT HIGH CONTAMINATION
Carbon Steel Body
R35BRLABG2
R35BRLABG2 3-1/2" 4-1/8" 0.116 1-1/8" 5/8" (2) BGAS ---- MODERATE CONTAMINATION
R35BRLABG3 3-1/2" 4-1/8" 0.116 1-1/8" 3/4" (2) BGAS ---- MODERATE CONTAMINATION
Carbon Steel Body
R11A-1
R11A-1 4" 1" N/A N/A 1" SHAFT MOUNT (1) BGF N/A MODERATE CONTAMINATION
R11A/BRG 4" 1" N/A N/A N/A (1) BGAS N/A MODERATE CONTAMINATION
R11AB1 4" 1" 0.10 1-1/8" 1/2" (1) BGAS N/A MODERATE CONTAMINATION
R11AB2 4" 1" 0.10 1-1/8" 5/8" (1) BGAS N/A MODERATE CONTAMINATION
R11AB3 4" 1" 0.10 1-1/8" 3/4" (1) BGAS N/A MODERATE CONTAMINATION
R11AD1 4" 1" 3.03 1-1/2" 1/2" (1) BGAS N/A MODERATE CONTAMINATION
R11AD2 4" 1" 3.03 1-1/2" 5/8" (1) BGAS N/A MODERATE CONTAMINATION
R11AJ2 4" 1" 0.45 1-3/8" 5/8" (1) BGAS N/A MODERATE CONTAMINATION
R11AL1 4" 1" 1.08 1-1/2" 1/2" (1) BGAS N/A MODERATE CONTAMINATION
R11AL2 4" 1" 1.08 1-1/2" 5/8" (1) BGAS N/A MODERATE CONTAMINATION
R11AN1 4" 1" 1.64 1-1/2" 1/2" (1) BGAS N/A MODERATE CONTAMINATION
R11AN2 4" 1" 1.64 1-1/2" 5/8" (1) BGAS N/A MODERATE CONTAMINATION
R11AO1 4" 1" 1.33 1-1/2" 1/2" (1) BGAS N/A MODERATE CONTAMINATION
R11AO2 4" 1" 1.33 1-1/2" 5/8" (1) BGAS N/A MODERATE CONTAMINATION
R11AQ2 4" 1" 1.33 1-3/8" 5/8" (1) BGAS N/A MODERATE CONTAMINATION
R11AW1 4" 1" 0.17 1-3/8" 1/2" (1) BGAS N/A MODERATE CONTAMINATION
R11AW2 4" 1" 0.17 1-3/8" 5/8" (1) BGAS N/A MODERATE CONTAMINATION
R11AY1 4" 1" 2.03 1-1/2" 1/2" (1) BGAS N/A MODERATE CONTAMINATION
R11AY2 4" 1" 2.03 1-1/2" 5/8" (1) BGAS N/A MODERATE CONTAMINATION
Hardened Steel Body
R41NB2
R41NB2 4" 1" 1.707 1-1/8" 5/8" (2) BGAS (2) NRT HIGH CONTAMINATION
R41NB3 4" 1" 1.707 1-1/8" 3/4" (2) BGAS (2) NRT HIGH CONTAMINATION
R41NR2 4" 1" 1.957 2" 5/8" (2) BGAS (2) NRT HIGH CONTAMINATION
R41NSDBB2 4" 1" 3.019 2" 5/8" (2) BGAS (2) NRT HIGH CONTAMINATION
R41NSDBB3 4" 1" 3.019 2" 3/4" (2) BGAS (2) NRT HIGH CONTAMINATION
Carbon Steel Body
R18N-1
R18N-1 4" 1-1/4" N/A N/A 1" SHAFT MOUNT (1) BGF N/A MODERATE CONTAMINATION
R18N/BRG 4" 1-1/4" N/A N/A N/A (1) BGAS (2) NRT HIGH CONTAMINATION
R18NB1 4" 1-1/4" -0.019 1-1/8" 1/2" (1) BGAS (2) NRT HIGH CONTAMINATION
R18NB2 4" 1-1/4" -0.019 1-1/8" 5/8" (1) BGAS (2) NRT HIGH CONTAMINATION
R18NN1 4" 1-1/4" 1.525 1-1/2" 1/2" (1) BGAS (2) NRT HIGH CONTAMINATION
R18NO1 4" 1-1/4" 1.213 1-1/2" 1/2" (1) BGAS (2) NRT HIGH CONTAMINATION
R18NW2 4" 1-1/4" 0.051 1-3/8" 5/8" (1) BGAS (2) NRT HIGH CONTAMINATION
R18NX1 4" 1-1/4" 1.841 2" 1/2" (1) BGAS (2) NRT HIGH CONTAMINATION
R18NX2 4" 1-1/4" 1.841 2" 5/8" (1) BGAS (2) NRT HIGH CONTAMINATION
Carbon Steel Body
R40BRR2
R40BR/BRG 4" 2-3/8" ---- ---- ---- (2) BGAS (2) NRT HIGH CONTAMINATION
R40BR-1 4" 2-3/8" ---- ---- 1" Shaft Mount (2) BGF ---- MODERATE CONTAMINATION
R40BRP2 4" 2-3/8" 0.06 2" 5/8" (2) BGAS (2) NRT HIGH CONTAMINATION
R40BRR1 4" 2-3/8" 0.06 2" 1/2" (2) BGAS (2) NRT HIGH CONTAMINATION
R40BRR2 4" 2-3/8" 0.06 2" 5/8" (2) BGAS (2) NRT HIGH CONTAMINATION
R40BRR3 4" 2-3/8" 0.06 2" 3/4" (2) BGAS (2) NRT HIGH CONTAMINATION
R40BRU1 4" 2-3/8" 0.06 1-3/8" 1/2" (2) BGAS (2) NRT HIGH CONTAMINATION
R40BRU2 4" 2-3/8" 0.06 1-3/8" 5/8" (2) BGAS (2) NRT HIGH CONTAMINATION
R40BRU3 4" 2-3/8" 0.06 1-3/8" 3/4" (2) BGAS (2) NRT HIGH CONTAMINATION
Carbon Steel Body
R45BRR2
R45BR/BRG 4-1/2" 2-3/8" ---- ---- ---- (2) BGAS (2) NRT HIGH CONTAMINATION
R45BR-1 4-1/2" 2-3/8" ---- ---- 1" Shaft Mount (2) BGF ---- MODERATE CONTAMINATION
R45BRP2 4-1/2" 2-3/8" 0.06 2" 5/8" (2) BGAS (2) NRT HIGH CONTAMINATION
R45BRR1 4-1/2" 2-3/8" 0.06 2" 1/2" (2) BGAS (2) NRT HIGH CONTAMINATION
R45BRR2 4-1/2" 2-3/8" 0.06 2" 5/8" (2) BGAS (2) NRT HIGH CONTAMINATION
R45BRR3 4-1/2" 2-3/8" 0.06 2" 3/4" (2) BGAS (2) NRT HIGH CONTAMINATION
R45BRU1 4-1/2" 2-3/8" 0.06 1-3/8" 1/2" (2) BGAS (2) NRT HIGH CONTAMINATION
R45BRU2 4-1/2" 2-3/8" 0.06 1-3/8" 5/8" (2) BGAS (2) NRT HIGH CONTAMINATION
R45BRU3 4-1/2" 2-3/8" 0.06 1-3/8" 3/4" (2) BGAS (2) NRT HIGH CONTAMINATION
Carbon Steel Body
R12A-1
R12A-1 4-3/4" 1" N/A N/A 1" SHAFT MOUNT (1) BGF N/A MODERATE CONTAMINATION
R12A/BRG 4-3/4" 1" N/A N/A N/A (1) BGAS N/A MODERATE CONTAMINATION
R12AB2 4-3/4" 1" 0.1 1-1/8" 5/8" (1) BGAS N/A MODERATE CONTAMINATION
R12AD2 4-3/4" 1" 3.03 1-1/2" 5/8" (1) BGAS N/A MODERATE CONTAMINATION
R12AJ2 4-3/4" 1" 0.45 1-3/8" 5/8" (1) BGAS N/A MODERATE CONTAMINATION
R12AL2 4-3/4" 1" 1.078 1-1/2" 5/8" (1) BGAS N/A MODERATE CONTAMINATION
R12AO1 4-3/4" 1" 1.332 1-1/2" 1/2" (1) BGAS N/A MODERATE CONTAMINATION
R12AW1 4-3/4" 1" 0.17 1-3/8" 1/2" (1) BGAS N/A MODERATE CONTAMINATION
R12AW2 4-3/4" 1" 0.17 1-3/8" 5/8" (1) BGAS N/A MODERATE CONTAMINATION
R12AY1 4-3/4" 1" 2.03 1-1/2" 1/2" (1) BGAS N/A MODERATE CONTAMINATION
R12AY2 4-3/4" 1" 2.03 1-1/2" 5/8" (1) BGAS N/A MODERATE CONTAMINATION
R12AY3 4-3/4" 1" 2.03 1-1/2" 3/4" (1) BGAS N/A MODERATE CONTAMINATION
Hardened Steel Body
R51NBRG
R51N/BRG 5" 1" N/A N/A N/A (2) BGAS (2) NRT HIGH CONTAMINATION
R51NR2 5" 1" 1.957 2" 5/8" (2) BGAS (2) NRT HIGH CONTAMINATION
R51NSDBB2 5" 1" 3.019 2" 5/8" (2) BGAS (2) NRT HIGH CONTAMINATION
R51NSDBB3 5" 1" 3.019 2" 3/4" (2) BGAS (2) NRT HIGH CONTAMINATION
Carbon Steel Body
R50BRR2
R50BR/BRG 5" 2-3/8" ---- ---- ---- (2) BGAS (2) NRT HIGH CONTAMINATION
R50BR-1 5" 2-3/8" ---- ---- 1" Shaft Mount (2) BGF ---- MODERATE CONTAMINATION
R50BRP2 5" 2-3/8" 0.06 2" 5/8" (2) BGAS (2) NRT HIGH CONTAMINATION
R50BRR1 5" 2-3/8" 0.06 2" 1/2" (2) BGAS (2) NRT HIGH CONTAMINATION
R50BRR2 5" 2-3/8" 0.06 2" 5/8" (2) BGAS (2) NRT HIGH CONTAMINATION
R50BRR3 5" 2-3/8" 0.06 2" 3/4" (2) BGAS (2) NRT HIGH CONTAMINATION
R50BRU1 5" 2-3/8" 0.06 1-3/8" 1/2" (2) BGAS (2) NRT HIGH CONTAMINATION
R50BRU2 5" 2-3/8" 0.06 1-3/8" 5/8" (2) BGAS (2) NRT HIGH CONTAMINATION
R50BRU3 5" 2-3/8" 0.06 1-3/8" 3/4" (2) BGAS (2) NRT HIGH CONTAMINATION
Carbon Steel Body
R60AO2
R60A/BRG 6" 1" N/A N/A N/A (1) BGAS N/A MODERATE CONTAMINATION
R60AAGB2 6" 1" 3.33 3" 5/8" (1) BGAS N/A MODERATE CONTAMINATION
R60AB1 6" 1" 0.1 1-1/8" 1/2" (1) BGAS N/A MODERATE CONTAMINATION
R60AB2 6" 1" 0.1 1-1/8" 5/8" (1) BGAS N/A MODERATE CONTAMINATION
R60AD2 6" 1" 3.03 1-1/2" 5/8" (1) BGAS N/A MODERATE CONTAMINATION
R60AJ1 6" 1" 0.45 1-3/8" 1/2" (1) BGAS N/A MODERATE CONTAMINATION
R60AJ2 6" 1" 0.45 1-3/8" 5/8" (1) BGAS N/A MODERATE CONTAMINATION
R60AW1 6" 1" 0.17 1-3/8" 1/2" (1) BGAS N/A MODERATE CONTAMINATION
R60AW2 6" 1" 0.17 1-3/8" 5/8" (1) BGAS N/A MODERATE CONTAMINATION
R60AX1 6" 1" 1.96 2" 1/2" (1) BGAS N/A MODERATE CONTAMINATION
R60AX2 6" 1" 1.96 2" 5/8" (1) BGAS N/A MODERATE CONTAMINATION
R60AY1 6" 1" 2.03 1-1/2" 1/2" (1) BGAS N/A MODERATE CONTAMINATION
R60AY2 6" 1" 2.03 1-1/2" 5/8" (1) BGAS N/A MODERATE CONTAMINATION
Hardened Steel Body
R61NBRG
R61N/BRG 6" 1" N/A N/A N/A (2) BGAS (2) NRT HIGH CONTAMINATION
R61NNB21 6" 1" 1.957 1-1/2" 5/8" NB21 N/A UNDER WATER
R61NR2 6" 1" 1.957 2" 5/8" (2) BGAS (2) NRT HIGH CONTAMINATION
R61NR3 6" 1" 1.957 2" 3/4" (2) BGAS (2) NRT HIGH CONTAMINATION
R61NSDBB2 6" 1" 3.019 2" 5/8" (2) BGAS (2) NRT HIGH CONTAMINATION
R61NSDBB3 6" 1" 3.019 2" 3/4" (2) BGAS (2) NRT HIGH CONTAMINATION
Carbon Steel Body
R90GGB2
R90GGB2 9" 1-1/2" 2.678 2" 5/8" (2) BGAS (2) NRR HIGH CONTAMINATION


BEARING INFORMATION

BGA – A 52MM (6205) Bearing used in high-speed applications

BGAS – A 52MM (6205) Bearing used in low to moderate speed applications where high contamination is present

BGF – A 52MM Collar locking bearing used in low to moderate speed applications where moderate contamination is present (used only for 1" shaft mounts)

BGBS – A 40MM (6203) Bearing used in low to moderate speed applications where high contamination is present

BGB – A 40MM (6203) Bearing used in high-speed applications

NB21 – A Fixed Bearing used in underwater applications

AUXILIARY SEAL INFORMATION

NRT – An auxiliary bearing seal that provides excellent protection in high contamination areas to greatly improve bearing life. The NRT seal has a low friction coefficient, providing low bearing drag.