Wichita Clutch LK Clutch User Manual

Industrial Clutch Products

MODEL LK

Air Set Clutches & Brakes

I N D U S T R I A L C L U T C H P R O D U C T S 32

LK Clutch or Brake Design Features

Clutch designed with total attention given to maximizing ventilation for cool running operation. Benefits
include: longer lining life; stable friction coefficients; and lower maintenance costs.

All materials selected and field proven to provide the best available resistance to wear and thermal distress.

Precision machining of all components ensures positive interchangeability of all mating parts.

S

elf-contained separator springs for
positive disengagements are integral
with each plate and cannot fall out
u

pon assembly or disassembly.

High quality non-asbestos lining
materials and maximum areas ensure
excellent heat dissipation and lining life.

Longest possible spline length incorpo­rated on the clutch discs to maximize the
load-carrying capacity and life.

Drive studs ensure free plate
motion during engagement and
disengagement. The use of
drive studs, rather than splines,
allows wear particles and other
contaminants to exit the clutch
as well as provides an excellent
path for cooling air flows.

Long life, low replacement cost piston seals.

Short-stroke lightweight alumi­num piston is contour machined
t

o match the cylinder recess and
provides for extremely fast clutch
response with minimal air
consumption.

Rotary seal and integral quick release valve
mounts directly to the clutch cylinder.
Custom drilled orifices per application and
clutch size in a large poppet style valve,
meters the inlet air to provide smooth,
shockless engagements and allows for
immediate release upon command.

33 I N D U S T R I A L C L U T C H P R O D U C T S

LK Clutch or Brake Design Features

LK-217 Clutch
installed on
200-ton press

Photo courtesy of Kansai Iron
and Sunny Ltd.

Low Inertia LK Clutch or Brake Description

The Model LK clutch and brake has evolved over many
years as a perfect choice for applications requiring rugged
and efficient clutching and braking of tough and unusual
type loads. The design incorporates an extremely low driven
inertia, highest torque capacity per envelope size, and the
quickest response with minimal air consumption of any
clutch or brake available. It is particularly suited to those
applications requiring frequent cycling and long life such as
is found in metalforming or indexing applications.

The components are arranged simply and efficiently.

A. Drive ring with integral drive studs.
B. Lined friction discs with internal drive splines.
C. Driving center plate with integral separating springs.
D. Driving pressure plate with integral separating springs.
E. Actuating piston and seals.
F. Actuating cylinder with integral rotary seal and QRV.
G. Externally splined inner hub (not shown).

Whether the application is in metalforming, oilfield
machinery, cranes, or shovels, the LK low inertia design is
an ideal choice for end of shaft mounting arrangements.

ABCBDEF

I N D U S T R I A L C L U T C H P R O D U C T S 34

Model LK

H

D

E

G

CC

D

G

E

A
BB

A

FF

H

SINGLE DISC CLUTCH

WITH ROTARY SEAL ADAPTOR PLATE

DOUBLE DISC CLUTCH

WITH ROTARY SEAL AND QRV ASSEMBLY

DIMENSIONAL DATA All dimensions in inches

Static Dynamic

Torque @ Torque @ Weight Weight Total WR
LK 100 PSIG 100 PSIG Outer Inner Weight Outer Inner GH
Model (lb.-in.) (lb.-in.) (lbs.) (lbs.) (lbs.) (lb.-ft.2) (lb.-ft.2)A B C D E F Min.-Max. No.-Size

LK-108 9,890 8,570 35 7 42 4.55 .20 4.75 3.75 10.50 12.25 11.250 2.25 1-1/8 - 2 8 - 3/8
LK-208 19,780 17,140 49 13 62 6.96 .37 6.38 5.38 10.50 12.25 11.250 3.44 1-1/8 - 2 8 - 3/8

LK-110 17,070 14,800 47 10 57 9.30 .60 4.91 4.25 12.13 14.25 13.000 2.25 1-1/8 - 2 8 - 3/8
LK-210 34,140 29,590 66 12 78 12.17 1.15 6.72 6.06 12.13 14.25 13.000 4.13 1-1/8 - 2 8 - 3/8

LK-111 27,730 24,030 65 13 78 15.74 .98 5.63 4.69 14.25 16.50 15.250 2.75 1-1/8 - 2-3/4 8 - 1/2
LK-211 55,460 48,065 84 28 112 20.29 1.95 7.25 6.31 14.25 16.50 15.250 4.38 1-3/4 - 2-3/4 8 - 1/2

LK-113 48,375 41,925 111 35 146 44.88 2.06 6.63 5.81 16.63 18.88 17.625 3.75 2-1/2 - 3-3/4 8 - 5/8
LK-213 96,750 83,850 140 52 192 57.70 3.77 8.44 7.63 16.63 18.88 17.625 4.50 2 - 3-3/4 8 - 5/8

LK-117 86,400 74,880 185 58 243 96.61 9.35 7.50 6.69 21.00 24.00 22.500 3.31 2-3/8 - 4-1/2 12 - 5/8
LK-217 172,800 149,760 275 111 386 141.06 18.32 10.25 9.44 21.00 24.00 22.500 6.00 2-5/16 - 4-1/2 12 - 5/8

LK-118 106,340 92,160 246 63 309 162.63 10.88 7.68 6.31 22.63 26.25 24.500 3.31 2-3/8 - 4-1/2 12 - 3/4
LK-218 212,680 184,320 353 121 474 223.26 21.50 10.50 9.13 22.63 26.25 24.500 6.00 2-5/16 - 4-1/2 12 - 3/4

LK-121 168,800 146,300 232 72 304 189.40 18.35 7.63 6.63 25.00 28.25 26,750 3.31 2-3/8 - 4-1/2 12 - 3/4
LK-221 337,600 292,590 348 139 487 271.44 36.32 10.19 9.19 25.00 28.25 26.750 6.00 2-5/16 - 4-1/2 12 - 3/4
LK-321 506,400 438,880 363 207 570 353.48 54.33 12.75 11.75 25.00 28.25 26.750 8.75 2-7/16 - 4-1/2 12 - 3/4

LK-125 292,000 253,070 388 131 519 418.0 38.8 9.19 7.50 29.75 32.50 31.000 5.00 3-3/4 - 5-3/8 12 - 3/4
LK-225 584,000 506,130 540 226 766 580.8 74.9 12.38 10.69 29.75 32.50 31.000 7.25 3-3/4 - 5-3/8 12 - 3/4
LK-325 876,000 759,200 634 331 965 745.0 111.8 15.53 13.84 29.75 32.50 31.000 10.25 3-3/4 - 5-3/4 12 - 3/4

LK-130 514,880 446,230 789 211 1,000 1,050.0 90 12.88 9.75 35.50 39.00 37.000 5.00 4-5/8 - 7-1/2 12 - 7/8
LK-230 1,029,760 892,460 1,018 356 1,374 1,384.0 172 16.13 13.00 35.50 39.00 37.000 7.13 4-5/8 - 7-1/2 12 - 7/8
LK-330 1,544,600 1,338,650 1,226 526 1,752 1,722.0 257 19.38 16.25 35.50 39.00 37.000 10.38 4-5/8 - 7-1/2 12 - 5/8

LK-235 1,640,400 1,421,680 1,071 517 1,588 2,053.0 327 13.75 10.48 40.00 39.25 36.375 7.13 5-1/8 - 9-5/8 24 - 1-1/32
LK-335 2,460,600 2,132,520 1,168 732 1,900 2,446.0 483 16.19 12.91 40.00 39.25 36.375 9.56 5-1/8 - 9-5/8 24 - 1-1/32

LK-242 2,851,750 2,471,515 2,749 1,015 3,764 7,473.0 954 18.27 16.58 48.75 48.00 44.000 8.50 6-1/2 - 12 24 - 1-3/4
LK-342 4,277,625 3,707,275 3,286 1,497 4,783 9,145.0 1,422 22.13 20.44 48.75 48.00 44.000 12.31 6-1/2 - 12 24 - 1-3/4

LK-248 4,333,200 3,755,440 3,849 1,420 5,269 13,013.0 1,688 20.45 18.77 54.75 54.00 50.000 9.50 8 - 14 24 - 1-3/4
LK-348 6,499,800 5,633,160 4,628 2,110 6,738 15,954.0 2,522 24.93 23.25 54.75 54.00 50.000 14.00 8 - 14 24 - 1-3/4
LK-448 8,666,400 7,510,880 5,407 2,800 8,207 18,895.0 3,357 29.41 27.73 54.75 54.00 50.000 18.50 8 - 14 24 - 1-3/4

NOTES: 1.) Use certified drawing dimensions only for final layouts.

35 I N D U S T R I A L C L U T C H P R O D U C T S

2.) DXF and IGES files available upon request.

2

WR

2

3.) Dimensions subject to change without notice.

4.) Consult factory or refer to application information when selecting units.