Constant Sleeve Series
Options
Straightforward and inexpensive all steel type of gear coupling constructed which has a single sleeve and 2 hubs
Comparatively easy set up
Precision cut 20° stress angle gear teeth with minimal backlash
Most common configurations can be found as stock goods
Angular misalignment of 1/2° per gear mesh (flex-plane)
Sizes 7/8 via twelve, to accommodate bore sizes as much as and which include 12.50 inches
Interference match (normal) and Clearance match on bores are available
Load Capacities vary from two,500 in-lbs as much as two,520,000 in-lbs
Designs for applications requiring horizontal and vertical orientation, full-flex, flex-rigid, mill-motor, disengagement, sliding hubs, Shear Pin, floating shaft, and spacers
Patented and tested BUNA N seal style with reinforced washers bonded towards the inside edges which positively retain lubricant and seal the interior from outside contaminants
Reinforced rubber seals with snap rings to hold in lubricant
Two snap rings made of hardened spring steel which securely hold the coupling together, are uncomplicated to put in or take out, however withstand one hundred,000 pounds of finish thrust
Inch and Metric bore sizes available
Flanged Sleeve Series
Options
Patented tooth type for long coupling lifestyle
Precision lower 20° pressure angle gear teeth with minimum backlash
All steel sleeves and hubs (stainless steel offered)
Types for applications requiring horizontal and vertical orientation
Most regular configurations are available as stock items
Angular misalignment of 1-1/2° per gear mesh (flex-plane) as much as size five.five, 3/4° for sizes 6 and above
Coupling sizes obtainable through size thirty to accommodate bore sizes up to and which includes 44 inches
Interference fit (common) and Clearance match on bores are available
Load capacities range from seven,600 in-lbs as much as 47,269,000 in-lbs
Exposed bolts typical on all sizes, shrouded out there by request up to dimension six
Typical bolts provided are treated to be corrosion resistant
Flanged sleeve couplings are interchangeable with marketplace specifications
Piloted gear fit for increased speeds and significantly less vibration
Labyrinth all steel seal design in FL series
Inch and Metric bore sizes out there
Common Forms and Sizes
Sier-Bath couplings are stocked in an assortment of configurations which include things like C and F common hubs and sleeves, Mill Motor hubs, Vertical type, Floating Shaft, and Spacer styles. ’s excellent engineering employees make it possible to support numerous added coupling forms this kind of because the Brakedrum type, Sliding Hub sort, Shear Pin kind, Jordan style, and customized lengths for non common shaft separations. Supplemental dimension ranges and types to meet uncommon application necessities may also be produced by to meet market demands. Material can vary from conventional steel to alloy steel and even stainless steel. The excellent simplicity of the coupling layout make this all possible.
Misalignment and End-Float Capability
The fundamental principle of Sier-Bath C and F style couplings is much like that of other traditional versatile gear couplings. Though it truly is desirable to align shafts as accurately as possible, the function of any versatile coupling is to absorb probable angular, parallel, and axial (end-float) misalignment. Sier-Bath couplings utilize a exclusive gear tooth geometry formulated exclusively to resolve issues with shaft misalignment and accommodate from 1/2° to 1-1/2° per gear mesh or flex plane. The hub teeth are totally crowned to supply to get a larger contact spot and decrease stresses below misaligned situations. The crowned tooth style also eliminates the vast majority of the finish loading that takes place on straight gear teeth beneath misalignment.

The FARR Coupling is applied whenever a rigid connection is required concerning the lower velocity shaft of a gearbox and the head shaft of the conveyor, bucket elevator, mixer or any over-hung or suspended load. When sized effectively, the FARR Coupling will carry the applica-tion torque, fat of gearbox, motor and swing plate. While in the case of a mixer, it will eventually carry the excess weight from the shaft and impeller, thrust forces and resulting bending moments.
Parts of a FARR Coupling consist of male and female piloted hubs made from 4140 alloy steel. The hubs are extended to assure 80% hub to shaft contact. Keeper plates are incorporated for security. The two hubs are assembled with Grade eight bolts and Grade À Prevailing Torque nuts. Typical coupling sizes have a nominal torque vary from 11,300 to five,736,000 in-lbs. More substantial sizes are available depending on the application.
Features
Heat Taken care of 4140 alloy steel
Male and Female pilots
Elevated Torque Capacity
Grade eight Bolts / Grade ?¡ãC?¡À Prevailing Torque Nuts
Extended length through bore
Keeper Plate design and style
FARR Coupling Variety Manual
A. Obtain The next Information and facts:
Application
Horsepower & RPM
Gearbox (Reducer) Ratio
Output Speed
All Shaft Sizes
Overhang Load
Lever Arm
(Distance from end of Gearbox output Shaft to Center-Line of Gearbox or Center Line of Gravity)
B.Calculate Application Torque:
T (in-lb) = ¡ê¡§HP x 63025¡ê?/RPM
C.Calculate Layout Torque by applying 2.0 Service Factor to application torque.
D.Select coupling with a torque capability equal to or greater than the Style and design Torque from the Performance Data table.
E.Verify that the Bore capacity of your coupling will meet the application shaft requirements.
F.The Male pilot hub to always be employed to the Reducer (Gearbox or Driver) shaft and the Female pilot hub to always be utilised over the Head (Driven) shaft.
G.Drive System Analysis must be performed by Application Engineering to verify coupling assortment.

The DILR and DILRA Sort coupling are a direct replacement to get a floating shaft design gear coupling. The DILR/DILRA is built to make use of the hubs already within the customer’s products. The DILR drop in substitute will probably be manufactured somewhat shorter that the DBFF and shims will likely be utilised for ease of upkeep. The DILRA is adjustable applying an SLD (Shaft Locking Device) to make axial or length adjustments. Clients with many pieces of products with very similar length couplings can stock a single spare spacer that could be applied as a replacement for much more than one coupling.
In case the finish consumer needs rigid hubs be provided with the coupling, a DIR or DIRA Sort coupling will be recommended as well as the BSE (distance In between Shaft Ends) needs to be specified.
Needed Facts:
The finish user needs to be ready to provide the next information when contacting Technical Assistance:
Motor horse electrical power and pace (involve gearbox ratio ¡§C input and output).
Rigid hub sizes (when the customer is making use of existing F-Style rigid gear coupling hubs).
DBFF or distance amongst flange faces from the rigid hubs for DILR Sort.
BSE shaft separation might be specified for DIR Sort.
Shaft sizes for rigid hubs DIR and DIRA Form couplings.
For maximum bore sizes, consult with Gear Coupling Catalog pages F-Style rigid hubs.

DI-6 Type Drop-In Center Industrial Coupling
The DI Type coupling is definitely the normal six bolt coupling with two hubs plus a spacer assembly that may be put in or eliminated without having disturbing the products and hubs and without removing the disc packs in the spacer assembly. Customized spacer lengths can be specified for distinctive applications. The coupling has two flex planes (a single at each disc pack) so it might accommodate parallel misalignment from the angular misalignment in each disc pack. This configuration may even accommodate axial misalignment within the specified limits.
Capabilities
Built to meet the API 610 Normal
Help for additional API requirements obtainable on request
Unitized disc pack
Infinite lifestyle if adequately aligned
Torsionally rigid without any back lash
No need to have for lubrication or upkeep
No wearing components and substantial resistance to harsh environmental circumstances
DI-8 Variety Drop-In Center Industrial Coupling
The DI Sort coupling would be the standard six bolt coupling with two hubs plus a spacer assembly which can be installed or eliminated devoid of disturbing the products and hubs and with no removing the disc packs in the spacer assembly. The coupling has two flex planes (1 at every disc pack) so it may accommodate parallel misalignment through the angular misalignment in each disc pack. This configuration will also accommodate axial misalignment inside of the specified limits.
Features
Designed to meet the API 610 Regular
Assistance for further API specifications readily available on request
Unitized disc pack
Infinite life if thoroughly aligned
Torsionally rigid with no any back lash
No require for lubrication or maintenance
No sporting parts and higher resistance to harsh environmental problems
Puller holes common with this design.

SXC-6 Style Closed Coupled Industrial Coupling
The SXC-6 Sort could be the typical 6 bolt coupling with two hubs, two disc packs and a spacer. The hubs can both be turned inward to accommodate shut coupled applications or 1 hub is often turned outward to accommodate added BSE?¡¥s (shaft separation). The coupling has
two flex planes (1 at just about every disc pack) so it may possibly accommodate parallel misalignment from the angular misalignment in just about every disc pack. This configuration will also accommodate axial misalignment within the specified limits.
Functions
Unitized disc packs
Infinite daily life if properly aligned
Torsionally rigid without the need of any back lash
No need to have for lubrication or maintenance
No sporting components and high resistance to harsh environmental ailments
Can be mixed with SU/SX hub for greater bore capacity
SXCS-6 Style Closed Coupled Industrial Coupling
The SXCS Type is the normal 6 bolt coupling with two hubs, two mounting rings, two disc packs and also a split spacer designed for ease of set up and upkeep. Custom spacer lengths might be specified for distinctive applications. The coupling has two flex planes (one at every single disc pack) permitting it to accommodate parallel misalignment from the angular misalignment in each disc pack. This configuration may even accommodate axial misalignment inside the specified limits.
Characteristics
Unitized disc pack
Infinite life when appropriately sized and aligned
Torsionally rigid devoid of any back lash
No will need for lubrication or upkeep
No wearing components and higher resistance to harsh environmental situations
Disc packs could be replaced without the need of moving equipment
For larger sizes, refer to SXCST couplings
SXCST-6 Form Closed Coupled Industrial Coupling
The SXCST Type is a regular 6 bolt coupling consisting of two hubs, two mounting rings, two disc packs as well as a split spacer. Custom spacer lengths is often specified for special applications. The coupling has two flex planes (one particular at every single disc pack) so it could accommodate parallel misalignment by the angular misalignment in every single disc pack. This configuration may also accommodate axial misalignment inside the specified limits.
Characteristics
Unitized disc pack
Infinite existence when correctly sized and aligned
Accommodates angular, axial, and parallel misalignment
Torsionally rigid without having any back lash
No have to have for lubrication or servicing
No wearing components and substantial resistance to harsh environmental situations
Shut coupled
Split spacer design and style will allow for ease of maintenance and disc pack elimination or replacement without having moving gear.

SU-6 Type Industrial Coupling
The SU Kind coupling is actually a 6 bolt single flex plane coupling which includes two hubs and one particular disc pack kit. It is actually only appropriate for your specified axial and angular misalignment and will not accommodate parallel misalignment. It is typically combined with sound shafts to make floating shaft couplings. See Page D-28 to get a image of an SXFS Variety floating shaft coupling.
Attributes
Unitized disc pack
Infinite life when properly aligned
Torsionally rigid without any back lash
No require for lubrication or servicing
No sporting elements and higher resistance to harsh environmental disorders
Greater sizes are available upon request
SX-6 Type Industrial Coupling
The SX-6 Style is actually a standard coupling with two hubs, a spacer, and two disc pack kits. The coupling has two flex planes (a single at every disc pack) so it could accommodate parallel misalignment through the angular misalignment in every disc pack. This configuration will also accommodate axial misalignment within the specified limits.
Attributes
Unitized disc pack
Infinite lifestyle when properly sized and aligned
Accommodates angular, axial, and parallel misalignment
Torsionally rigid without any back lash
No have to have for lubrication or upkeep
No wearing components and substantial resistance to harsh environmental conditions
Overload Bushings can be found
SX-8 Type Industrial Coupling
The SX-8 Form is usually a normal coupling with two hubs, a spacer, and two disc pack kits. The coupling has two flex planes (one at each disc pack) so it can accommodate parallel misalignment from the angular misalignment in every disc pack. This configuration will even accommodate axial misalignment within the specified limits.
Characteristics
Unitized disc pack
Infinite existence if adequately aligned
Accommodates angular, axial, and parallel misalignment
Torsionally rigid without the need of any back lash
No have to have for lubrication or maintenance
No sporting elements and substantial resistance to harsh environmental conditions.

The following details must be presented to when placing an purchase to make certain the right selection of the disc coupling:
Application and style of duty
Variety of driver (engine, motor, turbine, and so on.)
Speed and horsepower
Variety of driven
Shaft sizes and separation
Room limitations for important diameter and length
Variety of fit (Interference fit default, clearance fit and shaft locking device preparation out there upon request)
Unique necessities (vertical mounting, drop out center, flange mount, electrically insulated, API-610 up to 3,800 RPM, shear pins, balancing, and so on.)
Angular misalignment, axial misalignment, and rated torque are all connected for the coupling’s capacity to accommodate application torque in excess of any period of time. As illustrated during the following charts, once the application torque increases to 50% from the coupling capacity, the skill from the coupling to accommodate angular misalignment to is decreased. Precisely the same holds correct for the ability to accommodate axial misalignment.
Assortment Method
1. Select the coupling variety.
two. Select the driven machine services component SFA
3. Select the driving machine support aspect SFD
Care really should be taken when the driving machine is apart from a normal electrical motor or turbine. Some engines will impose additional fluctuations to the drive program and allowance really should be manufactured accordingly. A torsional coupling may well be demanded for diesel drives.

The following can be a sample application utilised to illustrate the common method for picking out a Disc coupling. Any resemblance to any current company?¡¥s application is neither intentional nor meant to resemble that company?¡¥s actual application.
Sample Application:
An organization includes a compressor application employing a 225 horsepower electrical motor working at one,150 RPM to drive a 3 cylinder multi stage reciprocating air compressor. The electric motor includes a 3-3/8 inch shaft by using a 7/8 inch keyway as well as the compressor has a 92mm shaft that has a 25mm keyway. The shaft separation is roughly 7 inches amongst shaft ends with some capability to alter the motor place. The shafts have a parallel misalignment/offset of approximately 1/32 of an inch.
Phase one: The initial phase will be to figure out what coupling form is to be selected for this application. Since the SU Sort coupling only supports
a single flex plane, it could possibly only accommodate angular and axial misalignment, but not parallel misalignment. The next option could be to search at an SX or DI Sort coupling. The 6 bolt SX Kind will accommodate the two parallel misalignment and the defined shaft separation. The size will likely be determined through the assortment torque as well as shaft diameters.
Phase two: Following, determine the application torque and apply the support aspect to determine the variety torque.The formula made use of to determine torque is as follows:
Application Torque ( in¡§Clb ) = ( HP x 63025 )/RPM
or Nm = ( KW x 9550)/RPM
Plugging during the numbers through the application description:
Application Torque ( in-lbs ) =(HP x 63025)/RPM = (225 x 63025)/1150 = 12,331 in-lbs
Application Torque x Services Element = Selection Torque
twelve,331 in-lbs x three.0 = 36,993 in-lbs
Step three: Utilize the SX coupling tables and note that the SX 202-6 is rated at 40,700 in-lbs, a lot more than ample to manage the choice torque calculated in phase 2. The SX202-6, nonetheless, is not going to assistance the 92mm shaft dimension. The following greater size coupling, the SX228-6, will help the 92mm shaft dimension plus the shaft separation dimension (BSE) is 6.88 inches, very near to the application?¡¥s sought after 7 inch separation. The SX228-6 is rated at 62,000 in-lbs which might seem to be excessive, on the other hand, the coupling size is critical to handle the bore size.
Phase four: The SX228-6 coupling is rated to get a optimum unbalanced speed of 3,400 RPM, over adequate to assistance the application speed of 1,150 RPM.
Step 5: To determine if your coupling will take care of the parallel misalignment, use the trig perform of tan 1?? = offset permitted for one inch = 0.0174
Multiply the 0.0174 x the distance between disc packs or ??S?¡¥ dimension from the table on page D-13, or 5.50 inches.
The allowable parallel offset is 0.0174 x five.50 = 0.096 inches. The utmost offset to the application is 1/32 inches (0.031), as a result this coupling can accommodate the parallel misalignment.
Note: It is always advisable to try to install the coupling at roughly 20% in the allowable misalignment. For this coupling the installer should attempt to realize superior than 0.020 parallel misalignment in the time of installation. This can permit to the extra misalignment that could occur because the result of gear settle and general tools wear.

Industrial SU Type
The SU Sort coupling includes a single flex plane with two hubs as well as a single disc pack. It truly is appropriate for angular and axial misalignment only. Two SU couplings are sometimes combined which has a shaft
to generate a floating shaft coupling. The shaft is often hollow for prolonged light fat floating shaft couplings.
Industrial SX Type
This can be the typical coupling style that incorporates two hubs, a stock length spacer designed to meet sector normal lengths, and two unitized disc packs. The coupling has two flex planes, one particular at each disc pack, enabling this coupling to accommodate parallel, angular, and axial misalignment with specified limits. The coupling is obtainable in 6 and 8 bolt designs and bore sizes as much as 13 inches (330mm) about the biggest dimension. Customized spacer lengths could be produced to meet specific shaft separations demanded for certain applications. The SX coupling could be fitted with overload bushings to safeguard the disc packs in above torque problems and may act as an anti-flail gadget. SX couplings are assembled on the time of installation on the tools in which the coupling are going to be in support.
Industrial DI Variety
The DI Form coupling has a “Drop-In” spacer assembly that is definitely assembled on the factory. The coupling consists of two hubs as well as a spacer assembly comprising of your spacer, two unitized disc packs, and two guard rings. The disc packs are bolted to the spacer and guard rings in the factory applying the torque values suggested by Lovejoy for that disc pack bolts. Using the hubs mounted to the shafts, the complete disc pack assembly is often “Dropped In” spot amongst the 2 hubs. The hubs are piloted to guarantee correct centering of your spacer assembly. This piloting serves as an anti-flail feature and aids within the coupling’s capability to meet the balance specifications mandated by API. This design coupling is designed to meet the balance and anti-flail needs specified in API-610.
Oversized, or Jumbo, hubs can be found for use using the DI Type coupling to allow for more substantial bore sizes on most DI coupling sizes. This allows for your utilization of smaller DI couplings in applications where a smaller sized dimension coupling can even now accommodate the application torque.
Industrial SXC Style
The SXC Form would be the shut coupled variation from the SX Form coupling. The SXC is much like the SX coupling in the disc packs are connected once the coupling is put in. Within the shut coupled units, the hubs are turned inward and are mounted inside the spacer. Note that with the hubs within the spacer, the maximum bore allowed during the hub will be decreased. The SXC couplings may be made use of with one particular or the two hubs turned outward to allow the coupling to accommodate distinctive shaft separations.
Industrial SXCS and SXCST Varieties
The SXCS and SXCST Sorts have split spacers as well as disc packs might be serviced or eliminated with no moving the hubs to the shafts and with out moving the products. The SXCS Style has the bolts that connect the hubs to your split spacer installed from the ends on the couplings. The SXCST possess the bolts set up from within the spacer pointing outward in the direction of the hubs.
More Types

Our disc packs are produced working with higher grade stainless steel
(AISI-301), ensuring high power, high endurance to fatigue, and resistance to most environmental conditions.
Disc couplings make use of unitized disc packs with each 6 or 8 bolt types. The eight bolt style can transmit higher torque compared to the 6 bolt layout, nevertheless, it can be not able to accommodate as considerably angular misalignment.
Couplings can be fitted with overload bushings to protect the disc pack during momentary torsional overloads.
Couplings are supplied in a selection of configurations to fit most applications. Moreover, ?¡¥s engineering division can customize a coupling to meet a lot of exclusive requirements such as near coupled, drop-out centers, electrically insulated, vertical mounting, and security couplings. A notable layout offered by is the lowered minute (DI Kind) coupling that meets the anti-flail device necessities mandated in API-610 though giving a reduced excess weight and short center of gravity to bearing distance.
The style and manufacture of disc couplings is integrated into a certified High quality Program in accordance to ISO-9001 to fulfill the high quality needs of clients.
Benefits of the Disc Coupling
Eliminates the need to have for lubrication and coupling maintenance
Coupling is often inspected devoid of disassembly
Condition of disc packs could be inspected having a strobe light even though the machine is operating
Note: It’s not advised that couplings be operated devoid of coupling guards.
Easy to assess gear misalignment
Torsionally rigid without having any backlash
No wearing parts
\Resistance to harsh environments
Long existence when adequately sized and aligned
High power density (larger torque for any offered outside diameter)
Supports the API-610 Normal as much as 3,800 RPM
Unitized disc packs make sure repeatability essential for meeting the stability and piloting needs as mandated by API-610
Out there with Overload Bushings to guard the coupling from momentary torque overloads
Prevents the disc pack from staying plastically deformed
Allows for shorter BSE (shaft separation) for the reason that bolts is usually turned to face inward
Special orientation of bolts permits the bolts to become tightened utilizing a torque wrench in lieu of nuts (Normal is usually to tighten nuts with torque wrench)