Emerson Offset and Angular Alignment, Axial Alignment, Final Assembly KD2 and KD20

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3.0Alignment

Note: Exact values and procedures for aligning equipment are normally specified by the equipment manufacturers. Good initial alignment to the minimum possible values will promote optimum machinery per- formance and eliminate potential operating problems. After securely tightening the foundation bolts, the hub separation and alignment should be rechecked and adjusted if necessary.

The coupling alignment should be checked periodically. Even when a coupling is well aligned at installation, subsequent settling of foundations, shifting of equipment, etc., may cause the alignment to deteriorate.

Offset and Angular Alignment

3.1Reverse dial indication or optical methods of alignment (such as la- ser) are recommended. A cold alignment and a hot check (with cor- rections if necessary) are required. The hub flange OD can be used to mount the alignment equipment. The hub flange OD is machined to be concentric to the coupling bore and can be used as the reference diameter.

3.2The maximum recommended operating misalignment is:

0.10 degrees per disc pack

(0.0035 in/in TIR equivalent parallel offset)

Important: Total misalignment is the combination of equipment par- allel offset and angular misalignment.

Note that improving the alignment below these values will promote optimum machinery performance.

Axial Alignment

3.3Align the hubs until they are at the correct hub separation. The hub separation is measured from the two flange faces, not from the pilot face.

Hub Separation = Center Assembly Length

4.0Final Assembly (KD2 and KD20)

4.1After correctly installing both hubs, use the separate collapsing screws to pull the adapter rings toward the center of the pre-assembled cen- ter section. This is made up of the spacer, two disc packs, and two adapter rings.

ADAPTER RING

COLLAPSING BOLT

DISC PACK

SPACER

Figure 4. Collapsing center section

4.2For each side of the center section, insert the collapsing bolts through the spacer clearance holes into tapped holes in the ring (see Figure 4).

4.3Tighten them evenly and collapse the disc packs equally, only enough to allow the center assembly to drop into place (see Figure 5).

CENTER ASSEMBLY

HUB BOLTS

O.D. PILOT

Figure 5. Installing center section.

4.4Put the center assembly (spacer and rings) between the rigid hubs, engage the pilot, and install the hub bolts in one hub flange.

4.5Release all the collapsing bolts, and install the hub flange bolts on the second rigid hub flange.

4.6Torque the hub flange bolts to the value specified in Table 1.

Coupling

Tightening Torque (Lightly Oiled)

 

Size

KD2

 

KD20

 

 

ft-lb

 

N-m

ft-lb

 

N-m

103

8

 

10

--

 

--

153

8

 

10

--

 

--

203, 204

30

 

40

50

 

70

253, 254

30

 

40

50

 

70

303, 304

75

 

100

110

 

150

353, 354

75

 

100

150

 

200

403, 404

150

 

200

270

 

370

453, 454

150

 

200

270

 

370

504

--

 

--

430

 

580

554

--

 

--

640

 

870

604

--

 

--

640

 

870

705

--

 

--

1120

 

1500

805

--

 

--

1470

 

2000

905

--

 

--

1470

 

2000

Table 1. Flange Bolt Tightening Torques.

5.0Removal

5.1Disassemble the coupling in the reverse order as per the applicable assembly procedure.

5.2KEYED HUBS - Install a puller on the hub using the tapped holes provided in the hub face. Pull the hub off the shaft.

6.0Disc Pack Replacement

The terminology used to identify parts and the order of assembly may differ from one coupling style to another. Follow the instructions which match the coupling style being installed.

KD2 - For KD20 skip to 6.7

6.1Remove the center assembly in reverse order as per the applicable assembly procedure. Remove disc pack bolts and nuts.

6.2Insert the disc pack removal socket into one of the clearance holes in the spacer flange or ring (Figure 6). Install the removal cap screw and turn it until it cannot be tightened any more.

Note: The removal socket is supplied as part of the “parts kit”.

DISC PACK

CLEARANCE HOLE

BUSHING

REMOVAL SOCKET

REMOVAL SCREW

 

WASHER

Figure 6. Bolt Disc Pack to Adapter.

6.3Remove the tool and repeat step 6.2 on all bushings to free the disc pack from the ring and spacer.

Disconnect all power before adjusting units

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© Emerson Power Transmission Manufacturing, L. P. or affiliates 2002. All Rights Reserved.

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Contents General Instructions Installation of Coupling Hubs Keyed MountingKOP-FLEX, INC., P.O. BOX 1696, Baltimore Maryland 21203 Alignment Final Assembly KD2 and KD20Disc Pack Replacement Offset and Angular AlignmentFinish Boring and Keyways KD20Dynamic Balance Keyways Important Safety InstructionsBore Sizing and Recommended Fit General Recommendations

KD2, KD20 specifications

The Emerson KD20 and KD2 series represent cutting-edge advancements in the realm of process automation and control, particularly for industrial applications. These controllers are designed to provide exceptional performance and versatility, catering to various needs across sectors such as manufacturing, energy, and environmental management.

The Emerson KD20 is engineered for comprehensive data acquisition and control, offering a wide array of features that enhance operational efficiency. One of its standout characteristics is its advanced user interface, which includes a high-resolution display and intuitive navigation. This facilitates easy monitoring and adjustment of parameters in real-time, enabling operators to respond swiftly to changes in process conditions.

In terms of connectivity, the KD20 is equipped with multiple communication protocols, such as Modbus, Profibus, and Ethernet, ensuring seamless integration into existing systems. This flexibility allows the KD20 to communicate effectively with a range of devices, from sensors and actuators to higher-level management systems, fostering a connected and intelligent operational environment.

The KD2, while similar in many aspects, offers more compact dimensions and is tailored for applications where space conservation is critical. It retains the essential features of the KD20 but prioritizes simplicity and efficiency, making it ideal for smaller setups or less complex processes. Its robust construction ensures reliability in demanding environments, withstanding temperature fluctuations and other challenging conditions.

Both models utilize Emerson’s proprietary control algorithms, which incorporate advanced methodologies like PID control and adaptive tuning. These algorithms optimize process control, ensuring consistency and accuracy in output, which is crucial for maintaining product quality and minimizing waste.

Furthermore, the KD series includes advanced diagnostic capabilities that provide valuable insights into system performance. These diagnostic tools help in predictive maintenance by identifying issues before they escalate, thereby reducing downtime and operational costs.

In summary, the Emerson KD20 and KD2 controllers combine sophisticated technology with user-friendly design, presenting powerful solutions for modern industrial automation. Their advanced features, robust construction, and flexible connectivity options make them essential tools for enhancing efficiency, reliability, and overall productivity in a wide array of applications.