Twin City Engineering Supplement ES-895
3
Motor Support Adjustment
Two different types of motor mounts, post and saddle,
are used on TSL Inline Centrifugal and QSL Mixed Flow
fans. Which mount to use depends on the size of the fan
and motor.
On the post type motor mount, the motor plate is
supported on four threaded rods. Belt tension is
adjusted by loosening the four nuts on top of the motor
plate and raising the motor plate by adjusting the four
nuts underneath it. The top nuts should then be
tightened to hold the motor plate in place.
On the saddle type motor mount, the motor pivots
on one side and adjustment of belt tension is achieved
by loosening the nuts on top of the motor plate on the
other side, then raising the motor plate by adjusting the
nuts underneath the motor plate. The nuts on top of the
motor plate should again be tightened to hold the motor
plate in place. Several holes are provided on the pivot
side, and the pivot point can be raised for gross belt
adjustment. If this adjustment is made, however, the
1. This equipment must not be operated without proper guarding of
all moving parts. While performing maintenance be sure remote
power switches are locked off. See installation manual for
recommended safety practices.
2. Before starting: Check all setscrews for tightness and rotate wheel
by hand to make sure it has not moved in transit.
*Suggested lubrication interval under ideal continuous operating
conditions. Relubricate while running, if safety permits, until some purging
occurs at seals. Adjust lubrication frequency depending on conditions of
purged grease. Use one-half of listed interval for vertical shaft applications
or for 24 hour operation. Hours of operation, temperature, and
surrounding conditions will affect the relubrication frequency required.
1. Lubricate with a high quality NLGI No. 2 lithium-base grease having
rust inhibitors and antioxidant additives, and a minimum oil viscosity
of 500 SUS at 100°F (38°C). Some greases having these properties
are:
Shell - Gadus S2 V100 2
Mobil - Ronex MP
Mobil - Mobilith SHC100
Mobil - Mobilith SHC220
2. Lubricate bearings prior to extended shutdown or storage and
rotate shaft monthly to aid corrosion protection.
Relubrication Schedule (Months)*
Spherical Roller Bearing - Solid Pillow Blocks
Speed (RPM)
Shaft DIA
500 1000 1500 2000 2500 3000 3500 4000 4500
1" thru 1
7
⁄
16
"
6
4
4
2
1
1
1
1
1
⁄
2
(25 – 35)
1
11
⁄
16
" thru 2
3
⁄
16
"
4
2
1
1
⁄
2
1
1
⁄
2
1
⁄
2
1
⁄
2
1
⁄
2
1
⁄
2
(40 – 55)
2
7
⁄
16
" thru 3
7
⁄
16
"
3
1
1
⁄
2
1
1
⁄
2
1
⁄
2
1
⁄
4
1
⁄
4
(60 – 85)
3
15
⁄
16
" thru 4
15
⁄
16
"
2
1
⁄
2
1
1
⁄
2
1
⁄
4
(90 – 125)
Figure 3. Safety & Lubrication Instructions for Fans
with Unit Roller Bearings
1. This equipment must not be operated without proper guarding of
all moving parts. While performing maintenance be sure remote
power switches are locked off. See installation manual for
recommended safety practices.
2. Before starting: Check all setscrews for tightness and rotate wheel
by hand to make sure it has not moved in transit.
*Suggested lubrication interval under ideal continuous operating
conditions. Relubricate while running, if safety permits, until some purging
occurs at seals. Adjust lubrication frequency depending on conditions of
purged grease. Use one-half of listed interval for vertical shaft applications
or for 24 hour operation. Hours of operation, temperature, and
surrounding conditions will affect the relubrication frequency required.
1. Lubricate with a high quality NLGI No. 2 lithium-base grease having
rust inhibitors and antioxidant additives, and a minimum oil viscosity
of 500 SUS at 100°F (38°C). Some greases having these properties
are:
Shell - Gadus S2 V100 2
Mobil - Ronex MP
Mobil - Mobilith SHC100
Mobil - Mobilith SHC220
2. Lubricate bearings prior to extended shutdown or storage and rotate
shaft monthly to aid corrosion protection.
Figure 2. Safety & Lubrication Instructions for Fans
with Ball Bearings
Relubrication Schedule (Months)*
Ball Bearing Pillow Blocks
Speed (RPM)
Shaft DIA
500 1000 1500 2000 2500 3000 3500 4000 4500
1
⁄
2
" thru 1
11
⁄
16
"
6
6
5
3
3
2
2
2
1
(13 – 45)
1
15
⁄
16
" thru 2
7
⁄
16
"
6
5
4
2
2
1
1
1
1
(50 – 60)
2
11
⁄
16
" thru 2
15
⁄
16
"
5
4
3
2
1
1
1
(65 – 75)
3
7
⁄
16
" thru 3
15
⁄
16
"
4
3
2
1
1
(80 – 100)
Figure 4. Safety & Lubrication Instructions for Fans
with Spherical Roller Bearings with Split Pillow
Block Housings
1. This equipment must not be operated without proper guarding of
all moving parts. While performing maintenance be sure remote
power switches are locked off. See installation manual for
recommended safety practices.
2. Before starting: Check all setscrews for tightness, and rotate wheel
by hand to make sure it has not moved in transit.
*Suggested lubrication interval under ideal continuous operating
conditions. Remove bearing cap and observe condition of used grease
after lubricating. Adjust lubrication frequency as needed. Use one-half
of listed interval for vertical shaft applications or for 24 hour operation.
Hours of operation, temperature, and surrounding conditions will affect
the relubrication frequency required. Clean and repack bearings
annually. Remove old grease, pack bearing full and fill housing
reservoir on both sides of bearings to bottom of shaft.
1. Lubricate with a high quality NLGI No. 2 lithium-base grease
having rust inhibitors and antioxidant additives, and a minimum oil
viscosity of 500 SUS at 100°F (38°C). Some greases having these
properties are:
Shell - Gadus S2 V100 2
Mobil - Ronex MP
Mobil - Mobilith SHC100
Mobil - Mobilith SHC220
2. Lubricate bearings prior to extended shutdown or storage and
rotate shaft monthly to aid corrosion protection.
3. Purge or remove old grease when changing lubrication brands or
types.
Static Oil Lubrication
1. Use only high quality mineral oil with a VG grade indicated on the
customer submittal drawing.
2. Static oil level should be at the center of the lower-most roller
(Do not overfill.)
3. Complete lubrication change should be made annually.
Relubrication Schedule (Months)*
Spherical Roller Bearing - Split Pillow Blocks
Speed (RPM)
Shaft DIA
500
750 1000 1500 2000 2500 3000 3500 4000
1
7
⁄
16
" thru 1
15
⁄
16
"
6
4
1
⁄
2
4
4
3
1
⁄
2
2
1
⁄
2
2
1
⁄
2
1
1 0.50 oz.
(35 – 50)
2
3
⁄
16
" thru 2
13
⁄
16
"
5
4
1
⁄
2
4
2
1
⁄
2
2
1
⁄
2
1
1
⁄
2
1
⁄
2
1
⁄
4
1
⁄
4
0.75 oz.
(55 – 70)
2
15
⁄
16
" thru 3
15
⁄
16
"
4
1
⁄
2
4
3
1
⁄
2
2
1
⁄
2
1
1
⁄
2
1
1
⁄
2
2.00 oz.
(75 – 100)
4
7
⁄
16
" thru 4
15
⁄
16
"
4
4
2
1
⁄
2
1
1
⁄
2
4.00 oz.
(110 – 135)
5
7
⁄
16
" thru 6
15
⁄
16
"
4
2
1
⁄
2
1
1
⁄
2
7.00 oz.
(140 – 180)
Grease
to be
added at
each
interval
WARNING
WARNING
WARNING
