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Lovejoy Morgan coupling
2016-03-23 16:59:16
 

SHORT TEXT

LONG DESCRIPTION

COUPLING

COUPLING RRU - 87 DROPOUT STYLE; Make : Lovjoy
  Morgan part no: 10405608

 
 
 

Uniflex Coupling Design Flexible Spring Type Coupling with Exclusive Triple Wound Spring Design

 

The Uniflex Coupling is an all steel, single piece coupling that solves a variety of application concerns including: high misalignment, space limitations, high temperature, and exceptionally low backlash/windup. The unique flexing center of the Uniflex consists of three opposingly wound square wire springs for forward or reverse operation. Two steel hubs are then brazed to the steel spring pack to create a durable one-piece flexible coupling. Benefits of this coupling include:

      This designed flexibility compensates for high degrees of shaft misalignment (up to 4.5° angular, up to .045" parallel).

     The one piece Uniflex is simple to install nothing to replace, no wearing parts, and no lubrication needed.

     The compact design provides a coupling that is smaller and lighter than most couplings of comparable torque ratings. It is also

well suited for applications with inaccessible mounting locations.

     All metal design means that the Uniflex can be used in applications where severe environmental concerns are a factor. Standard

couplings withstand temperatures to +250° F (due to soldering); special designs to +600° F (stainless steel w/electron beam weld).

     The Uniflex is unaffected by oil, grease, dirt and most industrial chemicals.

UNIFLEX TRIPLE SPRING COUPLING  

  

The Uniflex is designed for applications up to 30,000 RPM such as textile equipment, conveyors, machine tools, centrifugal pumps, blowers, winding machines, and steering mechanisms. In addition, most sizes can be supplied in stainless steel for applications requiring frequent washdowns (food processing), additional chemical resistance (salt

water handling), non-magnetic properties (military), or sterile/vacuum usage (pharmaceutical).

 
 

Uniflex Coupling Types

 

Four styles of Uniflex couplings are available: shaft-to-shaft, drop  out, flange-to-flange and flange-to-shaft.

 


文本框: SPU Type

This is a durable one-piece flexible coupling for general purpose  shaft-to- shaft applications. It is the basis for all Uniflex coupling types.

 

RRU Type

This design offers quick disconnect for drop out requirements. It can also accomodate a slightly larger shaft diameter than the standard U type.

 

UF Type

This flange-to-flange type is designed to connect flange mounted equipment to another flange while compensating for misalignment. It is also the center drop out section of the RRU type.

 

UFH Type

A flange-to-shaft configuration, this couples flange mounted equipment to a shaft with all the benefits of Uniflex versatility. The stock flange plate is the same as used on the UF type.

 

Uniflex Coupling Selection                                    Step 3:   Determine the application service factor from page JW-6.


Once it is determined that the unique features of Uniflex meet your application, selection of the proper coupling depends on three factors: torque transmission, bore requirements, and RPM. When selecting a Uniflex coupling, the torque capability shown as maximum must not be exceeded. Nominal torque adjusted by an application service factor, start up torque, braking torque and any cyclic shock or peak torques inherent in the application must be considered.

 

Determine the correct Uniflex coupling size by working out the following calculations:

 

Step 1:  Determine the Uniflex type or configuration from page SP-14.

Step 2:  Calculate the nominal torque as T or nominal HP/100RPM

 

T =         (HP* x 63,025)            HP/100RPM = HP* x 100       

(in-lbs)                 RPM*                                           RPM*

 

T =         (KW* x 9,550) (Nm)             RPM

 

* Usually HP (KW) & RPM of prime mover, if the coupling is to be attached to the prime mover or if no speed or torque devices are between the driver and driven equipment.


Multiply the nominal torque by the application service factor to

determine the total required torque.

Step 4:   Select the size.

Step 5:   Check to be sure the peak torque or maximum torque from starting, braking or cyclic peaks does not exceed the coupling maximum capability. For applications involving frequent starts and stops, refer to Lovejoy Engineering. NOTE: Diesel and gasoline engine drives usually require special considerations. Refer to Lovejoy Engineering.

Step 6: a. Check the coupling maximum bore capability versus the shaft to be used. If necessary, pick a larger size coupling to get the needed bore capacity.

b.Check the maximum speed.

c. Check any limiting dimensions.

 

文本框: SPSelection Example

A rolling device operates at 6,000 RPM and requires 15 HP. The driving shaft is 1.250" diameter and the roll shaft is 1.125" diameter. Select the proper U type shaft-to-shaft coupling. Occasional emergency stops impose 675 in-lbs of torque, otherwise the operation has no cyclic loading. Start  up torque is 1/3  of emergency stopping torque. Rolls of various types typically have a 1.5 - 2.0 application service factor.

Determine the nominal torque or HP/100RPM:

 

Step 1:                 T=      15 x 63,025     158 in-lbs 6,000

HP/100 RPM =      15 x 100        0.25 HP/100 RPM

6,000

 

Step 2:  Determine the Total Rated Torque:

Tr = 158 x 2.0 = 316 in-lbs

 

Maximum stopping torque  = 675 in-lbs Start up torque = 225 in-lbs

 

The U-125 coupling meets all the above requirements with the key item as the maximum stopping torque.


Step 3:  The U-125 has a maximum bore capability of 1.250", which covers the application driver shaft of the same size. The roll shaft is 1.125", which is less than maximum.

 

Note:  Uniflex maximum bore sizes includes a standard keyway allowance.

 

Uniflex Coupling Technical Data

 

Selection Chart

 

Size

Wind Up At Max. Torque1

Misalignment  Capability

Maximum Angular Offset

in

Maximum Parallel Offset mm

Maximum

Recommended End Play

in       mm

Maximum Torque

in-lbs    Nm

HP 100RPM

Maximum Speed RPM

18 Reg.

1.8

3.0°

0.008

0.20

0.010

0.25

18

2.0

0.03

30,000

25 Reg.

1.8

4.5°

0.011

0.28

0.020

0.51

34

3.8

0.05

30,000

37 Reg.

1.7

4.5°

0.014

0.36

0.020

0.51

39

4.4

0.06

30,000

50 Reg.

1.8

4.5°

0.021

0.53

0.035

0.89

82

9.3

0.13

30,000

62 Reg.

0.8

3.0°

0.019

0.48

0.035

0.89

126

14.2

0.20

20,000

75 Reg.

1.8

4.5°

0.028

0.71

0.040

1.02

175

19.8

0.28

20,000

87 Reg.

1.6

4.5°

0.035

0.89

0.040

1.02

346

39.1

0.55

10,000

100 Reg.

1.0

3.0°

0.030

0.76

0.040

1.02

565

63.8

0.90

6,000

125 Reg.

1.8

4.5°

0.044

1.12

0.040

1.02

755

85.3

1.21

6,000

137 Reg.

1.8

3.0°

0.035

0.89

0.040

1.02

1,260

142.4

2.02

6,000

150 Reg.

0.8

3.0°

0.041

1.04

0.040

1.02

1,890

213.5

3.02

3,000

25 Short

1.0

3.0°

0.007

0.18

0.015

0.38

34

3.8

0.05

30,000

37 Short

1.0

3.0°

0.009

0.23

0.015

0.38

39

4.4

0.06

30,000

50 Short

1.0

3.0°

0.014

0.36

0.010

0.25

82

9.3

0.13

30,000

62 Short

0.8

3.0°

0.019

0.48

0.020

0.51

126

14.2

0.20

20,000

75 Short

1.1

3.0°

0.019

0.48

0.020

0.51

175

19.8

0.28

20,000

87 Short

1.1

3.0°

0.024

0.61

0.020

0.51

346

39.1

0.55

10,000

100 Short

1.0

3.0°

0.030

0.76

0.020

0.51

565

63.8

0.90

6,000

125 Short

1.2

3.0°

0.030

0.76

0.020

0.51

755

85.3

1.21

6,000

137 Short

1.3

3.0°

0.035

0.89

0.020

0.51

1,260

142.4

2.02

6,000

150 Short

0.8

3.0°

0.041

1.04

0.020

0.51

1,890

213.5

3.02

3,000

Notes:       1.  Total backlash is approximately 1/3  of windup at maximum torqueconsult Lovejoy Engineering for more information.

2.  See Lovejoy list pricebook for UPC numbers.

 

Uniflex Coupling Data

U Type Shaft-to-Shaft

 


The U type is the basis for all Uniflex couplings. It is a shaft-to-shaft flexible coupling with a simple one piece design, making it ideal for indexing, robotic or positioning applications. The U type consists of a triple-wound flexible steel spring brazed to a steel hub at each end. This all steel design ensures optimum equipment protection in  severe environments and/or high temperature applications.

 

Regular and short versions are available for most sizes to accommodate different overall length requirements. Special hub or bore modifications are also possible. These units can be supplied with either pin holes or  with keyways and set screws. Lovejoy does not recommend the reboring of uniflex couplings by customers due to potential damage to the brazed joint.



文本框: SP

 U Type Dimensional Data

 

 

 

Size

 

 

HD

in

 

Min.

Bore

in            mm

 

Max.

Bore

in            mm

 

LTB

Reg         Short

in             in

 

 

Reg in

 

OAL1

Short in

Pin Location (SL) Reg        Short

in              in

 

Pin Size in

 

Set Screw Qty Per

Hub         Size

 

 

Weight

lbs.               kg.

U-18

0.61

0.12            3

0.25            6

0.31

.....

1.00

.....

0.16

.....

3/32

1

6-32

0.09

0.04

U-25

0.73

0.12            3

0.31            8

0.38

0.32

1.50

1.00

0.16

0.16

3/32

1

6-32

0.10

0.05

U-37

0.86

0.25            6

0.38         9.5

0.52

0.52

2.06

1.65

0.25

0.25

3/32

1

10-24

0.27

0.12

U-50

1.04

0.31            8

0.50       12.5

0.64

0.50

2.50

1.82

0.31

0.31

1/8

1

1/4-20

0.36

0.16

U-62

1.42

0.31            8

0.62          16

0.84

0.62

2.72

2.28

0.38

0.38

1/8

1

1/4-20

0.78

0.35

U-75

1.42

0.38          10

0.75          19

0.84

0.84

3.31

2.72

0.41

0.41

1/8

1

1/4-20

0.82

0.37

U-87

1.73

0.44          11

0.88          22

0.84

0.84

3.50

2.91

0.44

0.44

3/16

1

1/4-20

1.40

0.63

U-100

2.11

0.44          11

1.00          25

1.29

1.00

4.12

3.56

0.56

0.56

5/16

1

1/4-20

2.60

1.18

U-125

2.17

0.62          16

1.25          31

1.28

1.10

4.88

3.75

0.62

0.62

5/16

1

3/8-16

2.74

1.24

U-137

2.54

0.62          16

1.38          35

1.58

1.01

5.25

4.12

0.69

0.69

3/8

1

3/8-16

4.00

1.81

U-150

2.98

0.75          19

1.50          38

1.88

1.72

6.28

5.00

0.81

0.81

3/8

1

3/8-16

8.00

3.63

Note:      1.  OAL Tolerance + 1/8  inch.

 

Stainless Steel U Series Dimensional Data

 

 

 

Size

 

 

HD

Max.

Bore

in           mm

 

LTB

Reg        Short

in            in

 

OAL1

Reg       Short

in           in

Pin Location (SL)

Reg       Short

in            in

 

Pin Size in

 

Set Screw Qty Per

Hub            Size

 

Weight

lbs          kg.

U-18

0.60

0.25            6

0.31

.....

0.95

.....

0.16

.....

3/32

1

6-32

0.09

0.04

U-25

0.62

0.31            8

.....

0.41

.....

0.97

.....

0.16

3/32

1

6-32

0.10

0.05

U-37

0.75

0.31            8

.....

0.68

.....

1.68

.....

0.25

3/32

1

10-24

0.27

0.12

U-50

0.94

0.38         9.5

.....

0.58

.....

1.80

.....

0.31

1/8

1

1/4-20

0.36

0.16

U-62

1.25

0.50       12.5

0.96

0.77

2.65

2.27

0.38

0.38

1/8

1

1/4-20

0.78

0.35

U-75

1.25

0.50       12.5

.....

0.96

.....

2.65

.....

0.41

1/8

1

1/4-20

0.82

0.37

U-87

1.69

0.75          19

.....

0.99

.....

2.94

.....

0.44

3/16

1

1/4-20

1.40

0.63

U-100

1.94

1.00          25

1.41

1.13

4.09

3.55

0.56

0.56

5/16

1

1/4-20

2.60

1.18

U-125

1.97

1.00          25

.....

1.25

.....

3.99

.....

0.62

5/16

1

3/8-16

2.74

1.24

 

Note:       1.  OAL Tolerance + 1/8  inch.

 
 
 

Uniflex Coupling Data

RRU Type Dropout Style

The RRU type Uniflex coupling is designed for fast, easy installation and removal without disrupting the connected shafts. This is ideal when servicing impellers, bearings and seals.

 

The design consists of two steel hubs fastened with cap screws to

a Uniflex double flange coupling (UF type). The RRU is easily disas- sembled by simply removing the cap screws and sliding out the UF center spring section.

 

UF Type Flange-to-Flange

This coupling is actually the center dropout section of the RRU type, but it can be purchased separately for direct flange-to-flange mounting of the driving unit to the driven. The UF type coupling compensates for high misalignment to protect connected equipment, yet it is also well-suited for applications which require negligible backlash or windup and reliability under high temperature conditions.  Stock flange sizes are shown in the Dimensional Data table below, but other sizes can be provided to meet special mounting requirements.

RRU TYPE

RRU and UF Types Dimensional Data

 

 

 

Size

 

HD

in

Min.

Bore

in.       mm

Max.

Bore

in.       mm

 

HL

in

 

FL

in

 

FL1

in

 

OAL1

in

 

D

in

 

FD

in

Pin Loc.  Pin SL Size

in         in

 

S2

in

 

BC

in

 

Mtg. Screw3 Qty Size

 

Set Screw Qty.       Size

RRU-50

2.00

0.38     10

1.00       25

1.00

.....

0.25

3.52

1.88

2.00

0.50

1/8

1.56

1.50

3

1/4-20

1

1/4-20

RRU-75

2.50

0.38     10

1.25       32

1.25

.....

0.38

4.27

2.38

2.50

0.62

1/8

1.81

2.00

3

1/4-20

1

1/4-20

RRU-87

2.87

0.44     11

1.38       35

1.38

.....

0.38

4.84

2.75

2.88

0.69

3/16

2.12

2.25

3

1/4-20

1

1/4-20

RRU-100

2.31

0.44     11

1.38       35

1.38

0.50

0.38

4.90

3.12

3.25

0.44

5/16

2.18

2.68

3

5/16-18

1

1/4-20

RRU-125

2.75

0.62     16

1.62       41

1.62

0.50

0.50

5.84

3.56

3.68

0.56

5/16

2.62

3.12

3

5/16-18

1

3/8-16

RRU-137

3.25

0.62     16

1.88       48

1.88

0.50

0.50

6.53

4.25

4.38

0.69

3/8

2.81

3.75

3

3/8-16

1

3/8-16

RRU-150

3.75

0.75     19

2.12       54

2.12

0.62

0.50

7.66

5.00

5.38

0.82

3/8

3.44

4.38

4

3/8-16

1

3/8-16

Notes:       1.  OAL Tolerance + .19 inch.

2.   UF Center Drop out Length Tolerance +  .12 inch.

3.   Screws not supplied for UF.

4.   When ordering specify prefix RRU or UF; dimensions remain the same for either.

5.   See page SP-16 for Performance Data.

 

 

Uniflex Coupling Data

 


UFH Type Flange-to-Shaft

The one-piece UFH type coupling is similar to the U type, except that one hub is replaced by a flange plate. Stock flange sizes are shown in the Dimensional Data table below but other sizes can be made to order. As with the other Uniflex styles, this coupling compensates for high degrees of angular and parallel misalignment with very little backlash or windup and is reliable in harsh or severe environments.

 

 

Regular and short versions are available for each size to accommodate different overall length requirements. For increased versatility, the hub can be modified with a tapered, spline, hex or square bore. The standard hub is furnished with either a pre-drilled pin hole or with a keyway and set screw. Specify when ordering.

UFH Series Dimensional Data

 

 

 

Size

 

 

HD

in

 

Min.

Bore

in      mm

 

Max.

Bore

in      mm

 

LTB

Reg    Short

in         in

 

 

FL1

in

 

OAL1

Reg     Short

in         in

 

 

FD

in

 

 

D

in

 

Pin Loc.   Pin SL Size

in         in

 

 

BC

in

 

 

Mtg. Screw2 Qty.       Size

 

 

Set Screw Qty.    Size

UFH-50

1.04

0.31       8

0.50      13

0.64

0.50

0.25

2.03

1.50

2.00

1.88

0.31

1/8

1.50

3

1/4-20

1

1/4-20

UFH-75

1.42

0.38      10

0.75      19

0.84

0.84

0.38

2.58

2.00

2.50

2.38

0.41

1/8

2.00

3

1/4-20

1

1/4-20

UFH-87

1.73

0.44      11

0.88      22

0.84

0.84

0.38

2.82

2.24

2.88

2.75

0.44

3/16

2.25

3

1/4-20

1

1/4-20

UFH-100

2.11

0.44      11

1.00      25

1.29

1.00

0.38

3.17

2.88

3.25

3.12

0.56

5/16

2.68

3

5/16-18

1

1/4-20

UFH-125

2.17

0.62      16

1.25      32

1.28

1.10

0.50

3.75

2.82

3.68

3.56

0.62

5/16

3.12

3

5/16-18

1

3/8-16

UFH-137

2.54

0.62      16

1.38      35

1.58

1.02

0.50

4.03

3.46

4.38

4.25

0.69

3/8

3.75

3

3/8-16

1

3/8-16

UFH-150

2.98

0.75      19

1.50     .....

1.88

1.72

0.63

4.86

3.75

5.38

5.00

0.81

3/8

4.38

4

3/8-16

1

3/8-16

Notes:       1.  OAL Tolerance + .12 inch.

2.   Screws not supplied.

3.   See page SP-16 for Performance Data.