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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:
The same size can be made of different materials, including:
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:
RC Engine Bearing Sizes
Chrome Steel
Ceramic
Open
Metal Shields(ZZ)
Rubber Seals(-2RS)
Open
Metal Shields(ZZ)
Rubber Seals(-2RS)
695
695ZZ
695-2RS
695/C
695ZZ/C
695-2RS/C
607
607ZZ
607-2RS
607/C
607ZZ/C
607-2RS/C
697
697ZZ
697-2RS
697/C
697ZZ/C
697-2RS/C
608
608ZZ
608-2RS
608/C
608ZZ/C
608-2RS/C
698
698ZZ
698-2RS
698/C
698ZZ/C
698-2RS/C
689
689ZZ
689-2RS
689/C
689ZZ/C
689-2RS/C
6002
6002ZZ
6002-2RS
6002/C
6002ZZ/C
6002-2RS/C
6003
6003ZZ
6003-2RS
6003/C
6003ZZ/C
6003-2RS/C
6202
6202ZZ
6202-2RS
6202/C
6202ZZ/C
6202-2RS/C
6203
6203ZZ
6203-2RS
6203/C
6203ZZ/C
6203-2RS/C
6800
6800ZZ
6800-2RS
6800/C
6800ZZ/C
6800-2RS/C
6801
6801ZZ
6801-2RS
6801/C
6801ZZ/C
6801-2RS/C
6802
6802ZZ
6802-2RS
6802/C
6802ZZ/C
6802-2RS/C
6803
6803ZZ
6803-2RS
6803/C
6803ZZ/C
6803-2RS/C
6900
6900ZZ
6900-2RS
6900/C
6900ZZ/C
6900-2RS/C
6901
6901ZZ
6901-2RS
6901/C
6901ZZ/C
6901-2RS/C
6902
6902ZZ
6902-2RS
6902/C
6902ZZ/C
6902-2RS/C
6904
6904ZZ
6904-2RS
6904/C
6904ZZ/C
6904-2RS/C
16001
16001ZZ
16001-2RS
16001/C
16001ZZ/C
16001-2RS/C
16002
16002ZZ
16002-2RS
16002/C
16002ZZ/C
16002-2RS/C
16003
16003ZZ
16003-2RS
16003/C
16003ZZ/C
16003-2RS/C
16004
16004ZZ
16004-2RS
16004/C
16004ZZ/C
16004-2RS/C
63800
63800ZZ
63800-2RS
63800/C
63800ZZ/C
63800-2RS/C
63802
63802ZZ
63802-2RS
63802/C
63802ZZ/C
63802-2RS/C
63803
63803ZZ
63803-2RS
63803/C
63803ZZ/C
63803-2RS/C
R2
R2ZZ
R2-2RS
R2/C
R2ZZ/C
R2-2RS/C
R2-5
R2-5ZZ
R2-5-2RS
R2-5/C
R2-5ZZ/C
R2-5-2RS/C
R4
R4ZZ
R4-2RS
R4/C
R4ZZ/C
R4-2RS/C
R6
R6ZZ
R6-2RS
R6/C
R6ZZ/C
R6-2RS/C
R8
R8ZZ
R8-2RS
R8/C
R8ZZ/C
R8-2RS/C
R1616
R1616ZZ
R1616-2RS
R1616/C
R1616ZZ/C
R1616-2RS/C
Other Special RC Engine Bearing Dimensions & Applications
7X18X6mm
/
7x19x5mm
Novarossi
11X21X5mm
/
11X21X5.5mm
/
11.9x21.4x5.3mm
Novarossi
13x24x6mm
Novarossi
13x25x6mm
Novarossi/ RB S5,S7,WS7,WS7III
14x24x6mm
Novarossi
14x25x5mm
Novarossi
14x25x6mm
ＧＯ３Ｐ
14x25.4x6mm
Novarossi / Ninja 21,28 / O.S 21 / RB C5 / PICCO EVO2 MW
14x25.8x6mm
Novarossi P5X, 528X / RB TM928 / RB C6
14.2x25.3x6/6.3mm
Novarossi
14.2X25.4X6/6.3mm
Novarossi / SIRIO
14.5x26x6mm
Novarossi Plus 21-5,21-7
Stainless Steel RC Engine Bearings
Pictures of Freerun Rc Engine bearings:
| 7x17x5 Front Ceramic Rubber | 7x17x5 Front Rubber |
| 7x19x6 Front Rubber | 7x19x6 Front Ceramic Rubber |
| 12x21x5 Rear |
12x21x5 Ceramic Rear |
| 14x25x6 Ceramic Rear | 14x25x6 Rear |
| 14x25.4x6 Rear | 14x25.4x6 Ceramic Rear |
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.
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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