C and CFR Type Functionality Data

C Sort Flex-Flex Couplings
The C Type coupling includes two flex hubs, one sleeve and a single accessory kit consisting of seals and snap rings.
CFR Kind Flex-Rigid Couplings
The CFR Style coupling consist of 1 flex hub, 1 rigid hub, one sleeve, a single accessory kit consisting of seals and snap rings.
Attributes
Very simple and economical sort of gear coupling
All steel sleves and hubs
Reinforced rubber seals with snap rings to hold lubricant in place
Offered as vertical and horizontal couplings
Wide number of specific variations for instance full-flex, flex-rigid mill motor
Normal configurations are available of the shelf
Ordering Information and facts
Application: Driver and Driven.
Sort and dimension of coupling, horizontal, vertical etc.
Energy: Motor horspower or torque necessity.
Speed: Motor RPM or Driven RPM.
Distance between shaft ends (BSE).
Shaft sizes.
C and CFR Type Couplings
Ordering Data
Puller Holes are normal on sizes 4 via twelve.
Puller Holes can be found for sizes 7/8 as a result of 3.five at an extra charge.
The BSE (distance Concerning Shaft Ends) may vary among G and G1.
Interference bores without set screws are conventional unless otherwise specified.
Inch bores and keyway tolerances conform to ANSI / AGMA 9002-B04.
For metric bores and keyway tolerances, seek the advice of Engineering Section.
More substantial sizes are available, please seek advice from Technical Help.

Selection Process for DIR, DIRA, DILR, and DILRA Disc Couplings

The DILR and DILRA Kind coupling certainly are a direct substitute for a floating shaft style gear coupling. The DILR/DILRA is intended to employ the hubs presently within the customer’s products. The DILR drop in replacement will likely be produced slightly shorter the DBFF and shims will likely be applied for ease of maintenance. The DILRA is adjustable working with an SLD (Shaft Locking Gadget) for making axial or length adjustments. Prospects with numerous pieces of products with similar length couplings can stock 1 spare spacer that can be employed being a replacement for much more than one coupling.
In the event the finish consumer demands rigid hubs be supplied together with the coupling, a DIR or DIRA Type coupling will likely be advisable as well as the BSE (distance Between Shaft Ends) needs to be specified.
Demanded Information and facts:
The end consumer need to be prepared to provide the next facts when contacting Technical Support:
Motor horse electrical power and velocity (involve gearbox ratio ¡§C input and output).
Rigid hub sizes (when the purchaser is making use of current F-Style rigid gear coupling hubs).
DBFF or distance between flange faces of your rigid hubs for DILR Kind.
BSE shaft separation can be specified for DIR Style.
Shaft sizes for rigid hubs DIR and DIRA Type couplings.
For optimum bore sizes, consult with Gear Coupling Catalog pages F-Style rigid hubs.

DI-6,DI-8 Kind Drop-In Center Industrial Coupling

DI-6 Type Drop-In Center Industrial Coupling
The DI Sort coupling is definitely the normal six bolt coupling with two hubs plus a spacer assembly that could be set up or removed devoid of disturbing the products and hubs and without getting rid of the disc packs from the spacer assembly. Customized spacer lengths is often specified for distinctive applications. The coupling has two flex planes (one particular at each disc pack) so it might accommodate parallel misalignment from the angular misalignment in each disc pack. This configuration will also accommodate axial misalignment inside of the specified limits.
Options
Made to meet the API 610 Normal
Support for more API necessities readily available on request
Unitized disc pack
Infinite existence if adequately aligned
Torsionally rigid without having any back lash
No need to have for lubrication or servicing
No wearing components and large resistance to harsh environmental disorders
DI-8 Form Drop-In Center Industrial Coupling
The DI Form coupling would be the standard six bolt coupling with two hubs along with a spacer assembly that can be put in or eliminated without the need of disturbing the products and hubs and with no getting rid of the disc packs from the spacer assembly. The coupling has two flex planes (one particular at every single disc pack) so it might accommodate parallel misalignment from the angular misalignment in each disc pack. This configuration will also accommodate axial misalignment inside the specified limits.
Options
Made to meet the API 610 Conventional
Assistance for more API prerequisites readily available on request
Unitized disc pack
Infinite existence if appropriately aligned
Torsionally rigid without the need of any back lash
No have to have for lubrication or upkeep
No wearing parts and higher resistance to harsh environmental circumstances
Puller holes normal with this particular design.

SXC-6,SXCS-6,SXCST-6Type Closed Coupled Industrial Coupling

SXC-6 Style Closed Coupled Industrial Coupling
The SXC-6 Type is definitely the common six bolt coupling with two hubs, two disc packs and also a spacer. The hubs can the two be turned inward to accommodate shut coupled applications or one hub could be turned outward to accommodate further BSE?¡¥s (shaft separation). The coupling has
two flex planes (one at every disc pack) so it could accommodate parallel misalignment from the angular misalignment in every single disc pack. This configuration will even accommodate axial misalignment inside the specified limits.
Features
Unitized disc packs
Infinite lifestyle if correctly aligned
Torsionally rigid without the need of any back lash
No need to have for lubrication or upkeep
No sporting components and large resistance to harsh environmental disorders
Is often combined with SU/SX hub for enhanced bore capacity
SXCS-6 Kind Closed Coupled Industrial Coupling
The SXCS Form is definitely the regular six bolt coupling with two hubs, two mounting rings, two disc packs and a split spacer intended for ease of installation and upkeep. Custom spacer lengths might be specified for exclusive applications. The coupling has two flex planes (a single at just about every disc pack) enabling it to accommodate parallel misalignment by the angular misalignment in every single disc pack. This configuration may even accommodate axial misalignment within the specified limits.
Features
Unitized disc pack
Infinite life when appropriately sized and aligned
Torsionally rigid without the need of any back lash
No have to have for lubrication or maintenance
No wearing components and large resistance to harsh environmental conditions
Disc packs can be replaced devoid of moving products
For bigger sizes, refer to SXCST couplings
SXCST-6 Sort Closed Coupled Industrial Coupling
The SXCST Kind is usually a typical six bolt coupling consisting of two hubs, two mounting rings, two disc packs and also a split spacer. Customized spacer lengths might be specified for specific applications. The coupling has two flex planes (one particular at each disc pack) so it might accommodate parallel misalignment from the angular misalignment in just about every disc pack. This configuration will even accommodate axial misalignment in the specified limits.
Characteristics
Unitized disc pack
Infinite life when appropriately sized and aligned
Accommodates angular, axial, and parallel misalignment
Torsionally rigid with out any back lash
No require for lubrication or servicing
No sporting parts and substantial resistance to harsh environmental ailments
Shut coupled
Split spacer design lets for ease of servicing and disc pack elimination or substitute without moving gear.

SU-6,SX-6,SX-8 Type Industrial Coupling

SU-6 Kind Industrial Coupling
The SU Variety coupling is actually a 6 bolt single flex plane coupling which includes two hubs and one particular disc pack kit. It’s only ideal for that specified axial and angular misalignment and does not accommodate parallel misalignment. It is generally combined with strong shafts to produce floating shaft couplings. See Page D-28 for a picture of an SXFS Style floating shaft coupling.
Functions
Unitized disc pack
Infinite daily life when effectively aligned
Torsionally rigid devoid of any back lash
No require for lubrication or servicing
No sporting elements and high resistance to harsh environmental disorders
Bigger sizes are available upon request
SX-6 Kind Industrial Coupling
The SX-6 Kind is actually a typical coupling with two hubs, a spacer, and two disc pack kits. The coupling has two flex planes (one at every disc pack) so it could accommodate parallel misalignment from the angular misalignment in just about every disc pack. This configuration may even accommodate axial misalignment inside the specified limits.
Functions
Unitized disc pack
Infinite life when properly sized and aligned
Accommodates angular, axial, and parallel misalignment
Torsionally rigid with no any back lash
No will need for lubrication or upkeep
No wearing elements and high resistance to harsh environmental disorders
Overload Bushings are available
SX-8 Form Industrial Coupling
The SX-8 Style is a normal coupling with two hubs, a spacer, and two disc pack kits. The coupling has two flex planes (one particular at just about every disc pack) so it could accommodate parallel misalignment through the angular misalignment in each disc pack. This configuration may even accommodate axial misalignment inside the specified limits.
Options
Unitized disc pack
Infinite existence if effectively aligned
Accommodates angular, axial, and parallel misalignment
Torsionally rigid without any back lash
No have to have for lubrication or maintenance
No wearing elements and high resistance to harsh environmental conditions.

Proposed Details Necessary to Specify a Disc Coupling

The following info should be supplied to when placing an order to make sure the right choice of the disc coupling:
Application and kind of duty
Type of driver (engine, motor, turbine, and so forth.)
Speed and horsepower
Form of driven
Shaft sizes and separation
Room limitations for significant diameter and length
Style of fit (Interference match default, clearance fit and shaft locking device preparation accessible upon request)
Particular needs (vertical mounting, drop out center, flange mount, electrically insulated, API-610 as much as 3,800 RPM, shear pins, balancing, and so forth.)
Angular misalignment, axial misalignment, and rated torque are all linked on the coupling’s capability to accommodate application torque over any period of time. As illustrated from the following charts, once the application torque increases to 50% of your coupling capacity, the ability on the coupling to accommodate angular misalignment to is diminished. Exactly the same holds real for the capability to accommodate axial misalignment.
Variety Procedure
one. Select the coupling variety.
2. Select the driven machine services aspect SFA
3. Select the driving machine service component SFD
Care should be taken when the driving machine is apart from a normal electrical motor or turbine. Some engines will impose additional fluctuations over the drive system and allowance should be created accordingly. A torsional coupling could be necessary for diesel drives.

Methods In Choosing A Disc Coupling

The following can be a sample application used to illustrate the common method for deciding on a Disc coupling. Any resemblance to any present company?¡¥s application is neither intentional nor meant to resemble that company?¡¥s real application.
Sample Application:
An organization has a compressor application working with a 225 horsepower electric 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 that has a 7/8 inch keyway as well as compressor has a 92mm shaft which has a 25mm keyway. The shaft separation is approximately seven inches in between shaft ends with some means to modify the motor area. The shafts possess a parallel misalignment/offset of roughly 1/32 of an inch.
Phase 1: The initial step should be to ascertain what coupling form is to be picked for this application. Since the SU Form coupling only supports
a single flex plane, it may only accommodate angular and axial misalignment, but not parallel misalignment. The following decision can be to seem at an SX or DI Kind coupling. The 6 bolt SX Variety will accommodate the two parallel misalignment along with the defined shaft separation. The size will likely be established by the variety torque as well as the shaft diameters.
Step two: Next, calculate the application torque and apply the service factor to determine the variety torque.The formula made use of to calculate torque is as follows:
Application Torque ( in¡§Clb ) = ( HP x 63025 )/RPM
or Nm = ( KW x 9550)/RPM
Plugging from the numbers from your application description:
Application Torque ( in-lbs ) =(HP x 63025)/RPM = (225 x 63025)/1150 = twelve,331 in-lbs
Application Torque x Service Factor = Assortment Torque
12,331 in-lbs x three.0 = 36,993 in-lbs
Stage 3: Utilize the SX coupling tables and note the SX 202-6 is rated at 40,700 in-lbs, in excess of enough to deal with the choice torque calculated in phase 2. The SX202-6, having said that, won’t support the 92mm shaft dimension. The following larger dimension coupling, the SX228-6, will support the 92mm shaft dimension as well as shaft separation dimension (BSE) is 6.88 inches, pretty close to the application?¡¥s sought after 7 inch separation. The SX228-6 is rated at 62,000 in-lbs which might appear to be excessive, even so, the coupling size is critical to manage the bore dimension.
Step four: The SX228-6 coupling is rated to get a highest unbalanced speed of three,400 RPM, over adequate to support the application pace of one,150 RPM.
Phase five: To determine in the event the coupling will deal with the parallel misalignment, make use of the trig function of tan 1?? = offset permitted for 1 inch = 0.0174
Multiply the 0.0174 x the distance in between disc packs or ??S?¡¥ dimension through the table on page D-13, or 5.50 inches.
The allowable parallel offset is 0.0174 x 5.50 = 0.096 inches. The maximum offset for your application is 1/32 inches (0.031), consequently this coupling can accommodate the parallel misalignment.
Note: It can be always proposed to try and install the coupling at roughly 20% with the allowable misalignment. For this coupling the installer ought to attempt to obtain greater than 0.020 parallel misalignment at the time of installation. This will likely make it possible for for your added misalignment that should take place since the outcome of products settle and general tools wear.

Disc Coupling Overview

Industrial SU Kind
The SU Style coupling features a single flex plane with two hubs plus a single disc pack. It’s ideal for angular and axial misalignment only. Two SU couplings are frequently combined by using a shaft
to generate a floating shaft coupling. The shaft could be hollow for lengthy light weight floating shaft couplings.
Industrial SX Style
This can be the conventional coupling type that contains two hubs, a stock length spacer designed to meet market standard lengths, and two unitized disc packs. The coupling has two flex planes, one at every single disc pack, permitting this coupling to accommodate parallel, angular, and axial misalignment with specified limits. The coupling is accessible in 6 and eight bolt types and bore sizes up to 13 inches (330mm) within the greatest size. Customized spacer lengths may be manufactured to meet specific shaft separations demanded for unique applications. The SX coupling may be fitted with overload bushings to guard the disc packs in more than torque ailments and can act as an anti-flail device. SX couplings are assembled with the time of installation on the products in which the coupling might be in support.
Industrial DI Form
The DI Form coupling features a “Drop-In” spacer assembly which is assembled on the factory. The coupling consists of two hubs as well as a spacer assembly comprising from the spacer, two unitized disc packs, and two guard rings. The disc packs are bolted on the spacer and guard rings on the factory working with the torque values advisable by Lovejoy for the disc pack bolts. Using the hubs mounted around the shafts, the complete disc pack assembly might be “Dropped In” spot between the 2 hubs. The hubs are piloted to be sure good centering of the spacer assembly. This piloting serves as an anti-flail characteristic and aids from the coupling’s potential to meet the balance specifications mandated by API. This style coupling is developed to meet the stability and anti-flail needs specified in API-610.
Oversized, or Jumbo, hubs can be found for use using the DI Variety coupling to allow for greater bore sizes on most DI coupling sizes. This permits to the utilization of smaller sized DI couplings in applications exactly where a smaller sized size coupling can still accommodate the application torque.
Industrial SXC Type
The SXC Kind would be the shut coupled variation from the SX Type coupling. The SXC is similar to the SX coupling in the disc packs are connected when the coupling is installed. From the close 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 in the hub will be decreased. The SXC couplings might be applied with one particular or each hubs turned outward to permit the coupling to accommodate diverse shaft separations.
Industrial SXCS and SXCST Styles
The SXCS and SXCST Types have split spacers and the disc packs is usually serviced or removed devoid of moving the hubs about the shafts and with out moving the products. The SXCS Style has the bolts that connect the hubs towards the split spacer put in through the ends from the couplings. The SXCST have the bolts put in from inside the spacer pointing outward in the direction of the hubs.
Added Types

Disc coupling

Our disc packs are produced working with high grade stainless steel
(AISI-301), making certain high power, higher endurance to fatigue, and resistance to most environmental disorders.
Disc couplings employ unitized disc packs with each 6 or 8 bolt designs. The 8 bolt layout can transmit greater torque than the 6 bolt layout, even so, it is not in a position to accommodate as a great deal angular misalignment.
Couplings is often fitted with overload bushings to safeguard the disc pack all through momentary torsional overloads.
Couplings are provided within a assortment of configurations to match most applications. On top of that, ?¡¥s engineering department can customize a coupling to meet numerous exclusive prerequisites such as shut coupled, drop-out centers, electrically insulated, vertical mounting, and security couplings. A notable design made available by would be the lowered minute (DI Form) coupling that meets the anti-flail gadget specifications mandated in API-610 although providing a low excess weight and short center of gravity to bearing distance.
The layout and manufacture of disc couplings is integrated right into a licensed Good quality System according to ISO-9001 to fulfill the high high-quality demands of buyers.
Advantages on the Disc Coupling
Eliminates the need to have for lubrication and coupling servicing
Coupling is usually inspected with no disassembly
Condition of disc packs is often inspected having a strobe light whilst the machine is working
Note: It is actually not suggested that couplings be operated devoid of coupling guards.
Easy to assess equipment misalignment
Torsionally rigid devoid of any backlash
No wearing components
\Resistance to harsh environments
Long life when appropriately sized and aligned
High electrical power density (larger torque for any offered outside diameter)
Supports the API-610 Typical as much as 3,800 RPM
Unitized disc packs ensure repeatability essential for meeting the stability and piloting prerequisites as mandated by API-610
Available with Overload Bushings to protect the coupling from momentary torque overloads
Prevents the disc pack from becoming plastically deformed
Allows for shorter BSE (shaft separation) mainly because bolts might be turned to face inward
Special orientation of bolts enables the bolts to get tightened utilizing a torque wrench rather than nuts (Typical would be to tighten nuts with torque wrench)

JDLB Make alternative

The next headings have facts on necessary elements for assortment and correct use of gearbox.
For specific data about the gearbox selection,see the relevant chapters.
1.0 OUTPUT TORQUE
1.one Rated output torque
Mn2 [Nm]
The torque that will be transmitted constantly via the output shaft, together with the gear unit operated underneath a services element fs = 1.
one.two Expected torque
Mr2 [Nm]
The torque demand based mostly on application necessity. It truly is advised for being equal to or less than torque Mn2 the gearbox beneath research is rated for.
one.three Calculated torque
Mc2 [Nm]
Computational torque worth for being utilized when deciding on the gearbox.
It’s calculated considering the demanded torque Mr2 and support factor fs, as per the romance right here after:Mc2 = Mr2 ?¡è fs ?¨¹ Mn2
2.0 Electrical power
two.one Rated input energy
Pn1 [kW]
The parameter is usually discovered while in the gearbox rating charts and represents the KW which can be safely transmitted to your gearbox, primarily based on input pace n1 and service component fs= one.
two.2 Rated output power
Pn2 [kW]
This value is definitely the energy transmitted at gearbox output. it may be calculated using the following formulas:
Pn2 = Pn1 ?¡è |?d
Pn2= Mn2*n2/9550
three.0 EFFICIENCY
Efficiency is often a parameter which includes a main influence within the sizing of specified applications, and in essence will depend on gear pair designelements. The mesh data table on web page 9 demonstrates dynamic efficiency (n1=1400)and static efficiency values.
Keep in mind that these values are only accomplished following the unit continues to be run in and it is at the working temperature.
3.1 Dynamic efficiency
[|?d]
The dynamic efficiency is definitely the romantic relationship of electrical power delivered at output shaft P2 to energy utilized at input shaft P1:
|?d =P2/P1
three.2 Static efficiency[|?s]
Efficiency obtained at start-up of the gearbox. Even though this is typically not major issue for helical gears, it might be as a substitute critical when picking worm gearmotors working under intermittent duty.
4.0 Services Component
The service component (fs ) will depend on the operating problems the gearbox is subjected on the parameters that need to be taken into consideration to pick the most ample servies component appropriately comprise:
one. type of load from the operated machine : A – B – C
2. length of everyday operating time: hours/day(?¡Â)
three. start-up frequency: starts/hour (*)
Kind of LOAD: A – uniform,fa?¨¹0.three
B – reasonable shocks, fa?¨¹3
C – heavy shocks, fa?¨¹10
fa=Je/Jm
–Je(kgm2) minute of your external inertia decreased on the drive shaft
–Jm(kgm2) second of inertia of motor
–If fa>10 please speak to our Technical Service
A -Screw feeders for light products, followers, assembly lines, conveyor belts for light resources, little mixers, lifts, cleansing machines, fillers, handle machines.
B -Winding products, woodworking machine feeders, products lifts, balancers,threading machines, medium mixers, conveyor belts for heavy components,winches, sliding doors, fertilizer scrapers, packing machines, concrete mixers, crane mechanisms, milling cutters, folding machines, gear pumps.
C -Mixers for heavy components, shears, presses, centrifuges, rotating supports, winches and lifts for hefty products, grinding lathes, stone mills, bucket elevators, drilling machines, hammer mills, cam presses, folding machines, turntables, tumbling barrels, vibrators, shredders.