FYH BEARING UNITS

The FYH Air Handling Series is designed for a wide variety of highly demanding HVAC and air handling applications.

SUFFIX

P18 is the suffix code that designates smaller bore tolerance which allows for a tighter fit with the shaft. This, in turn, reduces vibration and noise and dramatically increases bearing life.

Tolerance and tolerance values of inner rings of P18 suffix (unit: µm)

Nominal bearing bore dia. d (mm)		Variation of tolerance of average bore dia. in plane Δdmp		Unequal bore dia. in plane Vdp	Radial runout of inner ring Kia
Over	Incl.	Max.	Min.	Max.	Max.
- 10 18 31.75 50.8	10 18 31.75 50.8 80	+13 +13 +13 +15 +18	0 0 0 0 0	6 6 10 10 14	7 8 10 10 13

Tolerance and tolerance values of inner rings of ISO standard (unit: µm)

Nominal bearing bore dia. d (mm)		Variation of tolerance of average bore dia. in plane Δdmp		Unequal bore dia. in plane Vdp	Radial runout of inner ring Kia
Over	Incl.	Max.	Min.	Max.	Max.
- 10 18 31.75 50.8	10 18 31.75 50.8 80	+15 +15 +18 +21 +24	0 0 0 0 0	10 10 12 14 16	10 15 18 20 25

The anti-rotation pin, in conjunction with the standard “J” fit housing, means very secure housing fit in high speed applications.

Internal bearing clearance is defined as the allowable space between the rolling elements and the raceways. C2 is smaller clearance than the standard, and it reduces the noise and vibration in high speed applications.

G23 is our original set screw called Bullet Point. The specialized design greatly reduces the potential for damage to both the setscrew and shaft from normal use to applications with severe vibration, shock load, and high speed.

Non contact lip seal is available for the lighter torque.

NOISE TEST

Bearings are noise tested to insure the high level of quality demanded by the air handling industry.


NU-LOC	UC-S3	NA-S3	UK-P11

NUP208J	UCP208JS3	NAP208JS3	UKP208JP11
S3 Standard	S3 (P11, P18, C2,G23)	P18 is standard for NA S3 (P11 and C2)	The clearance can be adjusted by the adapter sleeve. "Recommended torque" X 1.5 (as a guide)