How much oil is needed for a Roots URAI blower?

Proper lubrication is the key to long life for your blowers. The Roots Universal RAI® series utilizes grease on the drive end and oil on the gear end. For more information about the type of oil and grease needed, read more here: Lubrication for Rotary Lobe Blowers

Please note, the amounts listed in your manual and on this website are an approximate amount of oil to have on hand for the oil change.
When adding oil to your blower, the correct oil level in the oil sump is determined strictly by using the oil sight glass or oil level plug.  Make sure you use these indicators so you do not overfill the unit!

MODEL OIL – DRIVE END
VERTICAL
OIL – DRIVE END
HORIZONTAL
OIL – GEAR END
VERTICAL
OIL – GEAR END
HORIZONTAL
GREASE
URAI 22 N/A N/A 3.4 Fl. Oz 6.1 Fl. Oz Drive End
URAI 24 N/A N/A 3.4 Fl. Oz 6.1 Fl. Oz Drive End
URAI 32 N/A N/A 8.5 Fl. Oz 10.5 Fl. Oz Drive End
URAI 33 N/A N/A 8.5 Fl. Oz 10.5 Fl. Oz Drive End
URAI 36 N/A N/A 8.5 Fl. Oz 10.5 Fl. Oz Drive End
URAI 42 N/A N/A 12.7 Fl. Oz 14.5 Fl. Oz Drive End
URAI 45 N/A N/A 12.7 Fl. Oz 14.5 Fl. Oz Drive End
URAI 47 N/A N/A 12.7 Fl. Oz 14.5 Fl. Oz Drive End
URAI 53 N/A N/A 16 Fl. Oz 27.6 Fl. Oz Drive End
URAI 56 N/A N/A 16 Fl. Oz 27.6 Fl. Oz Drive End
URAI 59 N/A N/A 16 Fl. Oz 27.6 Fl. Oz Drive End
URAI 65 N/A N/A 28.3 Fl. Oz 52.1 Fl. Oz Drive End
URAI 68 N/A N/A 28.3 Fl. Oz 52.1 Fl. Oz Drive End
URAI 615 N/A N/A 28.3 Fl. Oz 52.1 Fl. Oz Drive End
URAI 76 N/A N/A 32.3 Fl. Oz 59.5 Fl. Oz Drive End
URAI 711 N/A N/A 32.3 Fl. Oz 59.5 Fl. Oz Drive End
URAI 718 N/A N/A 32.3 Fl. Oz 59.5 Fl. Oz Drive End
URAI-DSL 32 4 Fl. Oz 6.5 Fl. Oz 8.5 Fl. Oz 10.5 Fl. Oz N/A
URAI-DSL 33 4 Fl. Oz 6.5 Fl. Oz 8.5 Fl. Oz 10.5 Fl. Oz N/A
URAI-DSL 36 4 Fl. Oz 6.5 Fl. Oz 8.5 Fl. Oz 10.5 Fl. Oz N/A
URAI-DSL 42 5.5  Fl. Oz 10.8  Fl. Oz 12.7 Fl. Oz 14.5 Fl. Oz N/A
URAI-DSL 45 5.5  Fl. Oz 10.8  Fl. Oz 12.7 Fl. Oz 14.5 Fl. Oz N/A
URAI-DSL 47 5.5  Fl. Oz 10.8  Fl. Oz 12.7 Fl. Oz 14.5 Fl. Oz N/A
URAI-DSL 53 7.5  Fl. Oz 14.8 Fl. Oz 16 Fl. Oz 27.6 Fl. Oz N/A
URAI-DSL 56 7.5  Fl. Oz 14.8 Fl. Oz 16 Fl. Oz 27.6 Fl. Oz N/A
URAI-DSL 59 7.5  Fl. Oz 14.8 Fl. Oz 16 Fl. Oz 27.6 Fl. Oz N/A
URAI-DSL 65 16  Fl. Oz 31 Fl. Oz 28.3 Fl. Oz 52.1 Fl. Oz N/A
URAI-DSL 68 16 Fl. Oz 31 Fl. Oz 28.3 Fl. Oz 52.1 Fl. Oz N/A
URAI-DSL 615 16 Fl. Oz 31 Fl. Oz 28.3 Fl. Oz 52.1 Fl. Oz N/A
URAI-J 33 N/A N/A 8.5 Fl. Oz 10.5 Fl. Oz Drive End
URAI-J 36 N/A N/A 8.5 Fl. Oz 10.5 Fl. Oz Drive End
URAI-J 45 N/A N/A 12.7 Fl. Oz 14.5 Fl. Oz Drive End
URAI-J 47 N/A N/A 12.7 Fl. Oz 14.5 Fl. Oz Drive End
URAI-J 56 N/A N/A 16 Fl. Oz 27.6 Fl. Oz Drive End
URAI-J-DSL 33 4 Fl. Oz 6.5 Fl. Oz 8.5 Fl. Oz 10.5 Fl. Oz N/A
URAI-J-DSL 36 4 Fl. Oz 6.5 Fl. Oz 8.5 Fl. Oz 10.5 Fl. Oz N/A
URAI-J-DSL 45 5.5  Fl. Oz 10.8  Fl. Oz 12.7 Fl. Oz 14.5 Fl. Oz N/A
URAI-J-DSL 47 5.5  Fl. Oz 10.8  Fl. Oz 12.7 Fl. Oz 14.5 Fl. Oz N/A
URAI-J-DSL 56 7.5  Fl. Oz 14.8 Fl. Oz 16 Fl. Oz 27.6 Fl. Oz N/A
URAI-G 32 N/A N/A 8.5 Fl. Oz 10.5 Fl. Oz Drive End
URAI-G 33 N/A N/A 8.5 Fl. Oz 10.5 Fl. Oz Drive End
URAI-G 36 N/A N/A 8.5 Fl. Oz 10.5 Fl. Oz Drive End
URAI-G 42 N/A N/A 12.7 Fl. Oz 14.5 Fl. Oz Drive End
URAI-G 45 N/A N/A 12.7 Fl. Oz 14.5 Fl. Oz Drive End
URAI-G 47 N/A N/A 12.7 Fl. Oz 14.5 Fl. Oz Drive End
URAI-G 53 N/A N/A 16 Fl. Oz 27.6 Fl. Oz Drive End
URAI-G 56 N/A N/A 16 Fl. Oz 27.6 Fl. Oz Drive End
URAI-G 59 N/A N/A 16 Fl. Oz 27.6 Fl. Oz Drive End
URAI-G 65 N/A N/A 28.3 Fl. Oz 52.1 Fl. Oz Drive End
URAI-G 68 N/A N/A 28.3 Fl. Oz 52.1 Fl. Oz Drive End
URAI-G 615 N/A N/A 28.3 Fl. Oz 52.1 Fl. Oz Drive End



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