MK Plastics Axijet IO&M - Manual (Page 11)

Speed Increase
Close the pulley in order that the belt rides higher in the groove (larger pitch diameter). Ensure that the RPM limits
of the fan and the amperage limits of the motor are maintained. These can be read on the motor name plate.
Pulley & Belt Replacement
1. Remove pulleys from their respective shafts.
2. Clean motor and fan shafts.
3. Clean bores of pulleys and coat the bores with heavy oil.
4. Remove grease, rust, or burns from pulleys and shafts.
5. Remove burrs from the shaft by sanding.
6. Place fan pulley on the fan shaft and motor pulley on the motor shaft. Damage to the pulleys can occur
when excessive force is used in placing the pulleys on their respective shafts.
7. Tighten in place.
8. Install belts on pulleys and align as described in the Belt and Pulley Installation section.
Belt Drive Bearing Lubrication Instructions
*This table is for shaft bearings on belt drive fans, motor bearing lubrication should be per motor manufacturers in-
structions.
**Suggested initial greasing interval - remove bearing cap and observe condition of used grease after lubricating.
Adjust lubrication frequency as needed. Hours of operation, temperature, and surrounding conditions will affect the
relubrication frequency required. 'If bearings need to be re-packed, remove old grease, pack bearing full and fill
housing reservoirs on both sides of bearing to bottom of shaft.'
1. Lubricate with a multipurpose roller bearing NLGI No. 2 having rust inhibitors and antioxidant additives, and a
minimum oil viscosity of 500 SSU at 100ºF. Some greases having these properties are:
Shell - Alvania No. 2 Mobil - Mobilith AW2/Mobilith SHC100
Texaco - Premium RB2 American - Rykon Premium 2
2. Lubricate bearings prior to extended shutdown or storage and rotate shaft monthly to aid corrosion protection.
Static Oil Lubrication
1. Use only highest quality mineral oil with a minimum viscosity of 100 SSU at the oil’s operating temperature. The
oil’s operating temperature is approximately 10º greater than the bearing’s housing. SAE values having this viscos-
ity at the following operating
temperature are:
150º - SAE 20 160º - SAE 30 180º - SAE 40
2. Static oil level should be at the center of the lower-most roller (Do not overfill.)
Page11
S pe e d (RP M ) 500 750 1000 1500 2000 2500 3000
F a n S iz e
Ax ije t 1225
Ax ije t 1500
Ax ije t 1825
Ax ije t 2450
6 4 1/2 4 4 3 1/2 2 1/2 1
Ax ije t 3000 5 4 1/2 4 2 1/2 2 1/2 1 1/2
Ax ije t 3650 5 4 1/2 4 2 1/2 2 1/2
Ax ije t 4025 5 4 1/2 4 2 1/2 2 1/2
Ax ije t 4450 4 1/2 4 3 1/2 2 1/2
Ax ije t 4900 4 1/2 4 3 1/2 2 1/2
Ax ije t 5425 4 1/2 4 3 1/2 2 1/2
Ax ije t 6000 4 1/2 4 3 1/2
Ax ije t 6600 4 4 2 1/2
Ax ije t 7300 4 4 2 1/2
Re lu b rica tio n S ch e d u le (M o nth s)**
Relubric ation is not required. B earings are fac tory c harged with the c orrec t
am ount greas e and do not require a further greas e c harge.