Rexnord Falk A Series User manual

Introduction
This manual covers instructions for converting Model A, B, C
or K, 1000 series YF and 2000 series Y and YB drives with
standard or optional grease purged seals to the improved
magnum seal design (Model L). These instructions also apply
to the previous mentioned drives with features such as lowered
foundation (YN, YBN) and extra capacity bearings (YT, YBT).
Earlier series Y and YB drives and Sizes 2110-2145Y1, Model
A drives cannot be converted.
The Magnum seal system consists of an inner seal cage with a
throttling bush seal. An effective seal is created by the
minimum clearances between the cage lip-shaft and the cage
lip-inner bearing race. In the event that oil would get beyond
the bush seal, drainback holes in the cage and housing route
the oil back into the drive.
A further feature of the Magnum seal is the use of a grease
purgeable contaminant seal cover on Sizes 2050-2135Y & YB
and a grease purgeable split cage on Sizes 2140-2195Y & YB
and 1080-1195YF. This outer cover/cage when filled with
grease, traps airborne debris before it can enter the inner
bush seal and the drive. A lip type seal prevents the grease
and contaminants from entering. Contaminated grease can be
purged by introducing fresh grease through the grease fitting.
Contaminated grease will be forced out along the shaft.
The complete Magnum seal system consisting of bush seal,
drainback and grease-purge feature can be incorporated into
all Type Y and YF high speed shafts. Most Type Y, YF & YB low
speed shafts can utilize the complete Magnum seal design
except those with high oil levels. Refer to the Factory to
determine which drives have high oil levels. Type YB high
speed shafts cannot be provided with the bush seal or
drainback but can use the grease-purge cover or cage
feature.
The usable shaft length is reduced when this seal assembly is
used.
When ordering parts or requesting information, specify the
M.O. number, drive size, model number, rpm, ratio and date
stamped on the reducer nameplate. Also specify whether high
or low speed shaft Magnum seal assemblies are required.
Include quantity required.
Parts required in the Magnum seal assembly for retrofitting are
as follows-
— Inner Seal Cage
— Grease Purge Cover/Cage with Lip Seal and Fasteners
— Shim-Gasket Kit
Parts no longer required are as follows-
— Standard Seal Cage and Seal (do not discard fasteners)
— Baffle Ring and Fasteners
— Old Split Seal Cage with Seal and Fasteners
(when applicable)
General Instructions
CAUTION: Lock out power source and remove all external
loads from drive before servicing drives or accessories.
Consult applicable local and national safety codes for proper
guarding of rotating members.
1. PRE-DISASSEMBLY — To prevent dirt from falling into the
drive, clean all external surfaces of reducer before
disassembly. Record mounting dimensions of couplings and
accessories for reference when reassembling. If it is necessary
to remove the reducer from its operating area, disconnect all
connected equipment and lift reducer from its foundation by
means of the four lifting holes.
Drainback
Drainbacks are not required on Type YB high speed shafts or
Type Y, YF and YB low speed shafts with high oil levels.
Determine if a low speed shaft drainback is required by
examining the new inner seal cage. If through holes are drilled
in the bottom of the cage as shown at right, a drainback is
required.
2. INTERNAL DRAINBACK —Remove reducer cover and
rotating elements per the instructions in the following manuals
Type Y — Manual 148-110.
Type YF — Manual 148-210.
Type YB — Manual 248-110.
Falk™Gear Drives •Magnum Seal Assembly Installation
All Sizes • TypesY&YB (Page1of5)
Rexnord Industries, LLC, Gear Group 148-140
3001 W. Canal St., Milwaukee, WI 53208-4200 USA Telephone: [phone] June 1994
Fax: [phone] e-mail: [email protected] web: www.rexnord.com Supersedes 5-90
Figure1—Typical Magnum Seal Assembly
Required Modifications
Sizes 2050-2135 (Model L)
Sizes 1080-1195 & 2140-2195 (Model L)

A. Drill holes in housing for each shaft extension to
create an internal drain system. Refer to Tables1&2
on Page 2 to determine which figure number to
follow for drilling of drainback holes.
B. Replace parts and reassemble housing per the
appropriate manuals mentioned above.
C. Install Magnum seal assembly per Manual 148-130
as follows:
C1. Type Y, Sizes 2050-2135 - Figure 1, Section 1.
C2. Type Y, Sizes 2140-2195 & Type YF, Sizes 1080-1195
- Figure 4 (Section II; for drives with high oil levels)
Figure 6 (Section IV; low oil levels) or Figure 7
(Section IV; for split seal).
C3. Type YB, Low Speed Shaft, Sizes 2050-2135 - Same
as C1 above. Type YB, Low Speed Shaft, Sizes
2140-2195 - Same as C2 above.
C4. Type YB, High Speed Shaft, All Sizes - Figure 1 (Section
1; standard cage) Figure 3 (Section 11; split cage) or
Figure 5 (Section III; split cage with split seals).
D. Figure 7 only - Remove lower pipe plug from inner
seal cage and using commercially available
hardware, connect each seal cage to the drilled hole
with tubing or piping.
3. EXTERIOR PIPING TO DRIVE DRAIN —Remove old
seal assemblies and install Magnum seal assemblies
per step 2C. Using commercially available tubing or
piping and hardware, connect each inner seal cage
to drive drain.
Magnum Seal Assembly Installation •Falk™ Gear Drives
(Page 2 of 5) TypesY&YB • AllSizes
Rexnord Industries, LLC, Gear Group148-140
3001 W. Canal St., Milwaukee, WI 53208-4200 USA Telephone: [phone]June 1994
Fax: [phone] e-mail: [email protected] web: www.rexnord.comSupersedes 5-90
TABLE1—TypeYF
DRIVE SIZE Shaft (High or Low
Speed) Ratio Range Figure No.
1080
LS All 2
HS 1.84 thru 4.57 2 or 7H
HS 5.06 thru 7.59 2
1090
LS All 2
HS 1.84 thru 5.06 2 or 7H
HS 5.60 thru 7.59 2
1100 LS All 2
HS 2or7
H
1110 LS All 2
HS 2or7
H
1120 LS All 2
1125 HS 2or7
H
1130 LS All 2
1135 HS 2or7
H
1140
LS
HS All 2 2
thru
1195
HIf spherical roller bearing is not pinned in housing base bore, use Figure 2.
If bearing is pinned, use Figure 7.
TABLE2—TypesY&YB
DRIVE
SIZE Reduction Shaft (High or Low Speed) Figure No.
2050
Y1, 2, 3 & YB2, 3, 4 LS 2
Y1 HS 5
Y2 HS 2
Y3 HS 6
2060
Y1, 2, 3 & YB2, 3, 4 LS 2
Y1 HS 5
Y2 HS 2
Y3 HS 6
2070
Y1, 2, 3 & YB2, 3, 4 LS 2
Y1 HS 2
Y2 HS 5
Y3 HS 4
2080
Y1, 2, 3 & YB2, 3, 4 LS 2
Y1 HS 2
Y2 HS 5
Y3 HS 4
2090
Y1, 2, 3 & YB2, 3, 4 LS 2
Y1 HS 2
Y2 HS 2
Y3 HS 3
2100
Y1, 2, 3 & YB2, 3, 4 LS 2
Y1 HS 2
Y2 HS 2
Y3 HS 3
2110 Y1, 2, 3 & YB2, 3, 4 LS 2 Y1, 2 HS 2
Y3 HS 3
2120
2125
Y1, 2, 3 & YB2, 3, 4 LS 2
Y1, 2 HS 2
Y3 HS 3
2130
2136
Y1, 2, 3 & YB2, 3, 4 LS 2
Y1, 2 HS 2
Y3 HS 3
2140
2145
Y1, 2, 3 & YB2, 3 LS 2
Y2 HS 2
Y3 HS 3
2150
2155
Y2, 3 & YB2, 3 LS 2
Y2 HS 2
Y3 HS 3
2160
2165
Y2, 3 & YB2, 3 LS 2
Y2 HS 2
Y3 HS 3
2170
2175 Y2, 3 & YB2, 3
Y2, 3
LS
HS
2
2
2180
2185 Y2, 3 & YB2, 3
Y2, 3
LS
HS
2
2
2190
2195 Y2, 3 & YB2, 3
Y2, 3
LS
HS
2
2

Falk™Gear Drives •Magnum Seal Assembly Installation
All Sizes • TypesY&YB (Page3of5)
Rexnord Industries, LLC, Gear Group 148-140
3001 W. Canal St., Milwaukee, WI 53208-4200 USA Telephone: [phone] June 1994
Fax: [phone] e-mail: [email protected] web: www.rexnord.com Supersedes 5-90
TABLE3—Figure 2, TypeY&YBDrainback Dimensions
DRIVE
SIZE Reduction Dimensions - Inches
Shaft A B C D E F G H J (NPT)
2050 Y1, 2, 3 & YB2, 3, 4 LS 0.50 0.375 2.50 3.12 0.332 0.75 5.00 0.332 1/8-27
Y2 HS 0.50 0.375 2.88 2.00 0.250 0.75 4.25 0.332 1/8-27
2060 Y1, 2, 3 & YB2, 3, 4 LS 0.50 0.375 2.12 3.75 0.332 0.75 5.00 0.332 1/8-27
Y2 HS 0.50 0.375 2.88 2.00 0.250 0.75 4.25 0.332 1/8-27
2070 Y1, 2, 3 & YB2, 3, 4 LS 0.50 0.375 2.88 3.75 0.332 0.75 5.75 0.332 1/8-27
Y1 HS 0.50 0.375 3.25 2.88 0.332 0.75 5.50 0.332 1/8-27
2080 Y1, 2, 3 & YB2, 3, 4 LS 0.50 0.375 2.50 4.25 0.332 0.75 6.00 0.332 1/8-27
Y1 HS 0.50 0.375 2.50 3.12 0.332 0.75 5.00 0.332 1/8-27
2090 Y1, 2, 3 & YB2, 3, 4 LS 0.50 0.375 3.00 4.75 0.332 0.75 6.50 0.332 1/8-27 Y1 HS 0.50 0.375 2.50 3.12 0.332 0.75 5.00 0.332 1/8-27
Y2 HS 0.50 0.375 3.25 2.88 0.332 0.75 5.50 0.332 1/8-27
2100 Y1, 2, 3 & YB2, 3, 4 LS 0.50 0.375 3.12 5.25 0.332 0.75 7.50 0.332 1/8-27 Y1 HS 0.50 0.375 3.12 3.75 0.332 0.75 6.00 0.332 1/8-27
Y2 HS 0.50 0.375 3.25 2.88 0.332 0.75 5.50 0.332 1/8-27
2110
Y1, 2, 3 & YB2, 3, 4 LS 0.50 0.375 4.25 6.38 0.332 0.75 8.00 0.332 1/8-27
YT1, 2, 3 & YBT2, 3, 4 LS 0.50 0.375 4.75 6.38 0.332 1.00 8.00 0.332 1/8-27
Y1 HS 0.50 0.375 3.50 4.25 0.332 0.75 7.00 0.332 1/8-27
Y2 HS 0.50 0.375 2.98 3.12 0.332 0.75 5.48 0.332 1/8-27
2120
2125
Y1, 2, 3 & YB2, 3, 4 LS 0.50 0.375 3.75 5.75 0.332 0.75 8.50 0.332 1/8-27
YT1, 2, 3 & YBT2, 3, 4 LS 0.50 0.375 2.50 7.00 0.332 0.75 8.50 0.332 1/8-27
Y1 HS 0.50 0.375 3.50 4.25 0.332 0.75 7.00 0.332 1/8-27
Y2 HS 0.50 0.375 3.12 3.75 0.332 0.75 6.00 0.332 1/8-27
2130
2135
Y1, 2, 3 & YB2, 3, 4 LS 0.44 0.312 4.18 7.00 0.332 0.75 9.50 0.332 1/8-27
YT1, 2, 3 & YBT2, 3, 4 LS 0.44 0.312 3.62 7.00 0.332 0.75 9.50 0.332 1/8-27
Y1 HS 0.50 0.375 4.62 4.75 0.332 0.75 8.50 0.332 1/8-27
Y2 HS 0.50 0.375 3.12 3.75 0.332 0.75 6.00 0.332 1/8-27
2140
2145
Y & YT1, 2,3&YB&YBT2, 3 LS 0.75 0.562 2.75 7.50 0.438 1.12 9.00 0.438 1/4-18
Y & YT2 HS 0.75 0.375 3.50 4.25 0.332 1.00 7.00 0.332 1/8-27
2150
2155 Y & YT1, 2,3&YB&YBT2, 3
Y & YT2
LS
HS
0.75
0.50
0.562
0.375
2.75
3.50
8.00
4.75
0.438
0.332
1.12
0.75
9.50
7.50
0.438
0.332
1/4-18
1/8-27
2160
2165 Y & YT1, 2,3&YB&YBT2, 3
Y & YT2
LS
HS
0.75
0.75
0.562
0.375
2.75
4.25
8.62
5.25
0.438
0.332
1.12
1.00
10.25
9.00
0.438
0.332
1/4-18
1/8-27
2170
2175
Y2, 3 & YB2, 3 LS 0.75 0.562 3.75 9.50 0.438 1.12 11.25 0.438 1/4-18
YT2, 3 & YBT2, 3 LS 0.75 0.562 2.88 9.50 0.438 1.12 11.25 0.438 1/4-18
Y2 HS 0.75 0.375 3.00 5.75 0.332 1.00 7.88 0.332 1/8-27
Y3 HS 0.75 0.375 4.94 3.75 0.332 1.00 7.88 0.332 ...
2180
2185
Y2, 3 & YB2, 3 LS 0.75 0.562 3.75 10.38 0.438 1.12 12.00 0.438 1/4-18
YT2, 3 & YBT2, 3 LS 0.75 0.562 2.88 10.38 0.438 1.12 12.00 0.438 1/4-18
Y2 HS 0.75 0.562 4.88 6.38 0.438 1.12 10.00 0.438 1/4-18
Y3 HS 0.75 0.375 4.88 3.75 0.332 1.00 7.75 0.332 1/8-27
2190
2195
Y2, 3 & YB2, 3 LS 0.75 0.562 3.75 10.75 0.438 1.12 12.50 0.438 1/4-18
YT2, 3 & YBT2, 3 LS 0.75 0.562 2.88 10.75 0.438 1.12 12.50 0.438 1/4-18
Y2 HS 0.75 0.562 5.50 7.00 0.438 1.12 11.00 0.438 1/4-18
Y3 HS 0.50 0.375 4.50 4.75 0.332 0.75 8.50 0.332 1/8-27