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Detailed Product Description
FreeRun is a specialized manufacturer of Rc Engine Bearings.
Freeun Bearing Company have been an industry leader in RC Engine bearing replacement
since 2005.Reducing rolling resistance and conserving energy has been our hallmark.
We offer a full line of standard & ceramic hybrid bearings specifically designed for today's
demanding RC Engines. Various ABEC tolerances, radial plays, retainer styles and seal/shield configurations are available. Just send us inquiry if you knew the RC engine manufacturer and RC engine model, or just send us the RC engine bearing size that you require.
SIZES:
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RC Engine Bearing Sizes
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Chrome Steel
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Ceramic
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Open
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Metal Shields(ZZ)
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Rubber Seals(-2RS)
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Open
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Metal Shields(ZZ)
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Rubber Seals(-2RS)
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695
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695ZZ
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695-2RS
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695/C
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695ZZ/C
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695-2RS/C
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607
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607ZZ
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607-2RS
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607/C
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607ZZ/C
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607-2RS/C
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697
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697ZZ
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697-2RS
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697/C
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697ZZ/C
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697-2RS/C
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608
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608ZZ
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608-2RS
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608/C
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608ZZ/C
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608-2RS/C
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698
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698ZZ
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698-2RS
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698/C
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698ZZ/C
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698-2RS/C
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689
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689ZZ
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689-2RS
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689/C
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689ZZ/C
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689-2RS/C
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6002
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6002ZZ
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6002-2RS
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6002/C
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6002ZZ/C
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6002-2RS/C
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6003
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6003ZZ
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6003-2RS
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6003/C
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6003ZZ/C
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6003-2RS/C
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6202
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6202ZZ
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6202-2RS
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6202/C
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6202ZZ/C
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6202-2RS/C
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6203
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6203ZZ
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6203-2RS
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6203/C
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6203ZZ/C
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6203-2RS/C
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6800
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6800ZZ
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6800-2RS
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6800/C
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6800ZZ/C
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6800-2RS/C
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6801
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6801ZZ
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6801-2RS
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6801/C
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6801ZZ/C
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6801-2RS/C
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6802
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6802ZZ
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6802-2RS
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6802/C
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6802ZZ/C
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6802-2RS/C
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6803
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6803ZZ
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6803-2RS
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6803/C
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6803ZZ/C
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6803-2RS/C
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6900
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6900ZZ
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6900-2RS
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6900/C
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6900ZZ/C
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6900-2RS/C
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6901
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6901ZZ
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6901-2RS
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6901/C
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6901ZZ/C
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6901-2RS/C
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6902
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6902ZZ
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6902-2RS
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6902/C
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6902ZZ/C
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6902-2RS/C
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6904
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6904ZZ
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6904-2RS
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6904/C
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6904ZZ/C
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6904-2RS/C
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16001
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16001ZZ
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16001-2RS
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16001/C
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16001ZZ/C
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16001-2RS/C
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16002
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16002ZZ
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16002-2RS
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16002/C
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16002ZZ/C
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16002-2RS/C
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16003
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16003ZZ
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16003-2RS
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16003/C
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16003ZZ/C
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16003-2RS/C
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16004
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16004ZZ
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16004-2RS
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16004/C
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16004ZZ/C
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16004-2RS/C
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63800
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63800ZZ
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63800-2RS
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63800/C
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63800ZZ/C
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63800-2RS/C
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63802
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63802ZZ
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63802-2RS
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63802/C
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63802ZZ/C
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63802-2RS/C
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63803
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63803ZZ
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63803-2RS
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63803/C
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63803ZZ/C
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63803-2RS/C
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R2
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R2ZZ
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R2-2RS
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R2/C
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R2ZZ/C
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R2-2RS/C
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R2-5
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R2-5ZZ
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R2-5-2RS
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R2-5/C
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R2-5ZZ/C
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R2-5-2RS/C
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R4
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R4ZZ
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R4-2RS
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R4/C
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R4ZZ/C
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R4-2RS/C
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R6
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R6ZZ
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R6-2RS
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R6/C
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R6ZZ/C
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R6-2RS/C
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R8
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R8ZZ
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R8-2RS
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R8/C
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R8ZZ/C
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R8-2RS/C
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R1616
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R1616ZZ
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R1616-2RS
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R1616/C
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R1616ZZ/C
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R1616-2RS/C
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Other Special RC Engine Bearing Dimensions & Applications
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7X18X6mm
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7x19x5mm
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Novarossi
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11X21X5mm
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11X21X5.5mm
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11.9x21.4x5.3mm
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Novarossi
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13x24x6mm
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Novarossi
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13x25x6mm
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Novarossi/ RB S5,S7,WS7,WS7III
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14x24x6mm
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Novarossi
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14x25x5mm
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Novarossi
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14x25x6mm
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ＧＯ３Ｐ
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14x25.4x6mm
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Novarossi / Ninja 21,28 / O.S 21 / RB C5 / PICCO EVO2 MW
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14x25.8x6mm
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Novarossi P5X, 528X / RB TM928 / RB C6
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14.2x25.3x6/6.3mm
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Novarossi
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14.2X25.4X6/6.3mm
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Novarossi / SIRIO
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14.5x26x6mm
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Novarossi Plus 21-5,21-7
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The same size can be made of different materials, including:
Stainless Steel RC Engine Bearings
Chrome Steel RC Engine Bearings
Ceramic RC Engine Bearings
We also is capable of supplying after market bearings for those RC Engine manufacturers listed below:
Pictures of Freerun Rc Engine bearings:
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7x17x5 Front Ceramic Rubber
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7x17x5 Front Rubber
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7x19x6 Front Rubber
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7x19x6 Front Ceramic Rubber
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12x21x5 Rear
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12x21x5 Ceramic Rear
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14x25x6 Ceramic Rear
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14x25x6 Rear
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14x25.4x6 Rear
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14x25.4x6 Ceramic Rear
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Ceramic High Performance RC Engine Bearing:
Ceramic hybrids are lighter, capable of achieving higher RPM’s and sustaining higher
operating temperatures than traditional bearings. Whenever using a ceramic hybrid
bearing in an RC Engine, we suggest leaving both seals on for the front bearing and one
seal facing the inside of the motor on the rear bearing. This protects the RC engine from
possible bearing failure.
RC ENGINE BEARING MAINTENANCE & INSTALLATION
FRONT BEARING : It is recommended that one of the shields be removed and
that the bearing is installed with the shielded side facing the outside of the engine.For Bearing's rubber sealed engine bearings however, it is recommended that
you leave both seals on. The bearing is already filled with grease or oil, so it
does not need the fuel to lubricate it. This also allows more fuel to get to the
rear bearing and to help stop leakage through the front bearing.
REAR BEARING : For maximum lubrication, both shields may be removed from
the rear (large) bearing. However, removing one shield will still allow the fuel/
lubricant to flow through the bearing and this method offers the added advantage of providing protection to the chamber area by eliminating the possibility of any
foreign matter or contaminants passing through. Either method is acceptable, it's really a matter of preference. If one shield is left in place, the bearing should be
installed with the open part of the bearing facing the small bearing in front.
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