Brochure

Mtd. Ball
Bearings
G-254
®
Mounted Ball Bearing Engineering Section
Sealmaster Gold and Material Handling Bearing Lubrication:
All Sealmaster Gold and Material Handling 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. Compat-
ibility 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 relu-
bricate with lithium complex thickened grease with a compa-
rable 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.
Note: Sealmaster bearings with the RM sufx are Reduced
Maintenance Bearings (ex. NP-16 RM). Sealmaster Reduced
Maintenance Bearings are designed to operate with the
standard factory ll of grease and are designed not to be
lubricated.
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 1. 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 guide-
lines, see Tables 2 and 3.
Note: Tables 2 and 3 are general recommendations. Experi-
ence and testing may be required for specic applications.
Note: Grease charges in Table 1 are based on the use of
lithium complex thickened grease with a NLGI grade 2 consis-
tency.
Note: The Maximum Operational Speeds listed in Table 2
and 3 are based on the use of a single lock setscrew insert with
felt seals. For maximum operational speeds of other locking
mechanisms and seals, refer to speed rating section 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 bear-
ing 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.)
Sealmaster Ball Lube Table 1 / Grease Charge for
Relubrication
Series
Bore Diameter
Grease
Charge
(Mass -
Ounces)
Bore Diameter
Grease
Charge
(Mass -
Ounces)
Gold - Performance
Material
Handling
Bearing
Standard Duty Medium Duty
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 - -
Sealmaster Ball Lube Table 2
Environment Temperature (°F)
Speed
(% Catalog Max)
Frequency
Dirty -20 to 250 0 - 100% Daily to 1 Week
Clean
-20 to 125
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
125 to 175
0 - 25% 2 to 6 Weeks
26 - 50% 1 Week to 1 Month
51 - 75%
Daily to 1 Week76 - 100%
175 to 250 0 - 100%
Sealmaster Ball Lube Table 3
Environment
Temperature
(°F)
Speed (%
Catalog
Max)
HT / HTC / HTA
Sufx (1)
HI Sufx
(2)
Dirty -20 to 400 0 - 100% Daily to 1 Week Daily to 1 Week
Clean
200 to 300
0 - 25% 1 to 3 Months 6 to 12 Months
26 - 50% 2 to 6 Weeks 2 to 6 Months
51 - 75% Daily to 1 Week
2 Weeks to 2 Months
76 - 100% Daily to 1 Week Daily to 1 Week
300 to 400
0 - 25%
2 Weeks to 1 Month 3 to 6 Months
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
(1) Use high quality 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.
Sealmaster Relubrication Frequency
Sealmaster High Temperature Suffix Modified
Bearing Relubrication Frequency