Sealmaster Ball Bearing Installation Manual
Ball Bearing
Installation Instructions
Set Screw, Skwezloc
®
F O R M
PN 786518, PS-740-0001E
9563E
Revised
August 2016
• Read and follow all instructions carefully.
• Disconnect and lock-out power before installation and maintenance.
Working on or near energized equipment can result in severe injury or death.
• Do not operate equipment without guards in place. Exposed equipment can
result in severe injury or death.
The procedures indicated should be carefully followed. Failure to do so can result in
misinstallation which could cause bearing performance problems as well as serious
personal injury. Installation, handling or operation of the bearing in excess of ±2
degrees can cause reduction in bearing performance and may lead to equipment
failure.
BEARINGS IN BOLT-ON HOUSINGS (UNITS)
1. CHECK AREA- Clean and organize bearing installation area, keep well lit. Be
sure mounting surfaces are clean and at.
2. CHECK SHAFT- Shaft should be within tolerance range shown in Table
#1, clean, and free of nicks and burrs. Mount bearing on unused section of
shafting or repair/replace shafting as required.
Table #1
SHAFTING
Shaft Diameter Shaft Tolerance
1/2 - 1 15/16 in. (12 - 49 mm) +0.0000 / -0.0005 in. (+0.000 / -0.012 mm)
2 - 3 3/16 in. (50 - 80 mm) +0.0000 / -0.0010 in. (+0.000 / -0.025 mm)
3 1/4 - 4 15/16 in. (82 - 125 mm) +0.0000 / -0.0015 in. (+0.000 / -0.040 mm)
3. INSTALL UNIT- Slide unit onto shaft. If it is difcult to mount bearing on shaft,
use a piece of emery cloth to reduce any high spots on shaft. Do not hammer
on any component of the bearing.
4. FASTEN UNIT IN PLACE- Install housing mounting bolts, check and align
bearing and tighten mounting bolts to recommended fastener torques.
Exercising extreme caution and safety, rotate shaft slowly to center bearing.
5.1 SET SCREW INSERTS
a. Set screws in a multiple bearing application should be aligned.
b. Torque rst set screw to one half recommended torque in Table #2.
Torque second set screw to full torque. Torque rst set screw to full
torque.
5.2 DOUBLE LOCK SET SCREW INSERTS
a. Set screws in a multiple bearing application should be aligned.
b. On one end of the inner ring, torque rst set screw to one half the
recommended torque in Table #2. Torque second set screw to full torque.
Torque rst set screw to full torque.
c. Repeat step 5b on opposite end of inner ring.
Table #2
SET SCREW TIGHTENING
SCREW
SIZE
1/4-28 1/8 65 - 85 - 7 - 10
5/16-24 5/32 125 - 165 - 15 - 18
3/8-24 3/16 230 - 300 - 25 - 34
7/16-20 7/32 350 - 450 30 - 40 40 - 55
1/2-20 1/4 500 - 650 40 - 55 55 - 75
5/8-18 5/16 1100 - 1400 90 - 120 120 - 165
5.3 SKWEZLOC INSERTS
a. Be sure that the Skwezloc collar is tted square and snug against the
shoulder on the inner ring.
b. Torque the Skwezloc collar cap screw to torque recommended in Table #3.
HEX.
SIZE
(in.-lbs.) (ft.-lbs.) (N-m)
TORQUE
• Periodic inspections should be performed. Failure to perform proper maintenance
can result in premature product failure and personal injury.
Table #3
SKWEZLOC CONCENTRIC LOCKING COLLAR CAP SCREW TORQUE
SCREW SIZE TORX SIZE INCH-POUNDS
# 8-32 T-25 70
# 10-24 T-27 100
1/4-20 T-30 240
5/16-18 T-45 495
6 MONITOR INSTALLED BEARING- After bearing has been run for several
minutes, and again after several hours, check bearing for excessive noise or
vibration. Shutdown machine and check housing temp: typical applications
operate at 100°F - 150°F (38°C - 66°C). Tighten all locking devices after 500
hours or 3 months, whichever comes rst.
Cylindrical OD Inserts and Inserts in Cylindrical OD Housings
INSTALL INSERT- be sure housing bore is clean and free of debris. Press bearing
into housing by applying force to face of outer ring. Do not hammer on any
component of the bearing or apply force to inner ring. Proceed with Step #1- 6
above. For recommended housing bore tolerance, consult Sealmaster
phone Sealmaster Application Engineering.
Spherical O.D. and (AR) Expansion Inserts
Important: Replacement Sealmaster bearing inserts are intended for use in
Sealmaster housings. Housings should be thoroughly inspected for damage
such as cracks, excessive wear or galling of the spherical seat, obstruction of
grease port, etc. prior to installation.
INSTALL INSERT- housing bearing seat should be wiped clean. Check grease
port and clean free of debris. Wet housing bearing seat with oil or grease. Secure
housing in a vise.
For Spherical OD:
a. Place bearing insert into housing load slot, positioning the insert outer race
dimple and lube hole in line with the casting lube port.
b. Using a bar slipped into the insert bore as a lever, swing insert into place
within the casting. Insert should have a snug t in housing bore. Do not
hammer. (Note: If insert can be made to swivel by hand in the housing bore,
t is too loose - replace entire unit. If heavy force is required, t is too tight replace entire unit).
c. Ensure alignment of housing grease port hole and bearing dimple and lube hole.
d. Place locking pin into lube port and thread lubrication tting into threaded
lube port hole. Grease tting adjustment is critical (overtightening or
undertightening can result in poor bearing performance), snug t with wrench,
then loosen 1/4 turn. Proceed with steps 1-6 above.
For Expansion Type:
a. Slide bearing into housing. Do not hammer.
b. Ensure alignment of housing grease port hole, brass ring lube hole and
bearing dimple.
c. Place locking pin into housing grease port hole, brass ring lube hole and
bearing dimple. Thread lubrication tting into threaded housing grease port
hole. Grease tting adjustment is critical (overtightening or undertightening can
result in poor bearing performance), snug tting with wrench, then loosen 1/4
turn. Axial positioning is critical.
d. Position bearing insert to maximize axial expansion. Proceed with steps 1-6 above.
®
catalog or
SEALMASTER GOLD LUBRICATION:
All Sealmaster Gold Ball bearings are delivered with a high quality lithium complex
grease with an EP additive. The bearing is ready for use with no initial lubrication
required. The grease consists of a lithium complex thickener, mineral oil, and
NLGI grade 2 consistency. Compatibility of grease is critical; therefore consult with
Application Engineering and your grease supplier to insure greases are compatible.
For best performance it is recommended to relubricate with lithium complex
thickened grease with a comparable NLGI consistency and base oil properties.
Relubricatable Sealmaster bearings are supplied with grease ttings or zerks for
ease of lubrication with hand or automatic grease guns. Always wipe the tting and
grease nozzle clean.
CAUTION: If possible, it is recommended to lubricate the bearing while rotating, until
grease purge is seen from the seals. If this is not an option due to safety reasons,
follow the alternate lubrication procedure below.
Re-Lubrication Procedure:
Stop rotating equipment. Add one half of the recommended amount shown in Table
4. Start the bearing and run for a few minutes. Stop the bearing and add the second
half of the recommended amount. A temperature rise after lubrication, sometimes
30°F (17°C), is normal. Bearing should operate at temperatures less than 200°F
(94°C) and should not exceed 250° (121°C) for intermittent operation. For lubrication
guidelines, see Table 5 and 6.
Sealmaster Ball Lube Table 4 / Grease Charge for Relubrication
Bore Diameter
Series
2-012 1/2 - 3/4 - 0.03 - -
2-015 13/16 - 1 - 0.04 1 0.03
2-13 1 1/16 - 1 1/4R 15/16 - 1 0.09 1 1/16 - 1 1/4R 0.06
2-17 1 1/4 - 1 7/16 1 3/16 0.13 1 1/4 - 1 7/16 0.09
2-19 1 1/2 - 1 9/16 1 7/16 0.18 1 1/2 - 1 9/16 0.14
2- 111 1 5/8 - 1 3/4 1 1/2 0.20 1 5/8 - 1 3/4 0.16
2-115 1 13/16 - 2R 1 11/16 - 1 3/4 0.22 1 13/16 - 2R 0.18
2-23 2 - 2 3/16 1 15/16 0.30 2 - 2 3/16 0.25
2-27 2 1/4 - 2 7/16 2 3/16 0.38 - -
2-211 2 1/2 - 2 11/16 2 7/16 - 2 1/2 0.53 - -
2-215 2 13/16 - 2 15/16 2 11/16 0.62 - -
2-33 3 - 3 3/16 2 15/16 0.88 - -
2-37 3 1/4 - 3 7/16 3 3/16 1.11 - -
2-38 3 1/2 3 7/16 1.37 - -
2-43 3 15/16 - 4 3/16 3 15/16 - 4 2.50 - -
2-47 5 4 7/16 - 4 15/16 3.91 - -
Gold - Performance
Standard Duty Medium Duty
Grease
Charge
(Mass -
Ounces)
Bore Diameter
Material
Handling
Bearing
Grease
Charge
(Mass -
Ounces)
Note: Tables 5 and 6 are general recommendations. Experience and testing may be
required for specic applications.
Note: Grease charges in Table 4 are based on the use of lithium complex thickened
grease with a NLGI grade 2 consistency.
Note: The Maximum Operational Speed listed in Table 5 and 6 are based on the use
of a single lock setscrew insert with felt seals. For maximum operational speeds of
the other locking mechanisms and seals, refer to catalog for speed rating or consult
Application Engineering.
LO and XLO Relubrication Frequency
LO and XLO bearings are designed for applications which require the bearing to
operate with less torque or drag than a standard bearing.
Note: Addition of lubricant to the bearing will increase bearing drag.
If relubrication is necessary:
1. Add a very small amount of lubricant
2. Check bearing rotational torque (be sure that the bearing still rotates freely enough
for the application.)
Grease Fitting Caps:
Sealmaster ball bearings now incorporate a unique, color-coding system to help
identify the type of grease in the bearings. Each relubricatable Sealmaster bearing
features a colored tting cap to help indicate the type of grease used in the individual
bearings. Below is a list of the colored tting caps and the type of grease they
represent.
• Yellow: Lithium complex, NLGI #2, ISO 100-220 oil viscosity
• Red: High temperature lithium complex, NLGI #2, ISO 220 synthetic oil viscosity
• White: H1 food grade calcium sulfonate, NLGI #2, ISO 100 oil viscosity
• Black: Non-standard grease
• No cap: Non-standard high temperature grease
Sealmaster bearings with the RM sufx are reduced maintenance bearings (ex. NP16 RM). Sealmaster reduced maintenace bearings are designed to operate with the
standard factory ll of grease and are designed not to be relubricated.
Sealmaster Relubrication Frequency
Sealmaster Ball Lube Table 5
Environment Temperature (°F)
Dirty -20 to 220 0 - 100% Daily to 1 Week
-20 to 125
Clean
125 to 175
175 to 220 0 - 100%
Speed
(% Catalog Max)
0 - 25% 4 to 10 Months
26 - 50% 1 to 4 Months
51 - 75% 1 Week to 1 Month
76 - 100% Daily to 1 Week
0 - 25% 2 to 6 Weeks
26 - 50% 1 Week to 1 Month
51 - 75%
Frequency
Daily to 1 Week76 - 100%
Sealmaster High Temperature Sufx Modied Bearing Relubrication Frequency
Sealmaster Ball Lube Table 6
Environment
Dirty -20 to 400 0 - 100% Daily to 1 Week Daily to 1 Week
Clean
(1) Use high temperature lithium complex grease, NLGI#2 and synthetic hydrocarbon oil with ISO
220 viscosity
(2) Use Krytox GPL-226, no substitutions
*DuPont is a registered trademark of E.I. du Pont de Nemurs and Company. This trade name,
trademark and/or registered trademark is property of their respective owner and is not owned or
controlled by Power Transmission Solutions.
Temperature
(°F)
200 to 300
300 to 400
Speed (%
26 - 50% 2 to 6 Weeks 2 to 6 Months
51 - 75% Daily to 1 Week
76 - 100% Daily to 1 Week Daily to 1 Week
26 - 50% 1 to 2 Weeks 1 to 3 Months
51 - 75% Daily to 1 Week 1 Week to 1 Month
76 - 100% Daily to 1 Week Daily to 1 Week
HT / HTC / HTA Sufx
Catalog
Max)
0 - 25% 1 to 3 Months 6 to 12 Months
0 - 25%
(1)
2 Weeks to 1 Month
HI Sufx
(2)
2 Weeks to 2 Months
3 to 6 Months
Regal, Sealmaster and Skwezloc are trademarks of Regal Beloit Corporation or one of its affiliated companies.
©2016 Regal Beloit Corporation, All Rights Reserved. MCIM16044E • Form 9563E • Printed in USA
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