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2429678

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Kop-Flex 204 KD 21 SS1000 FB (Rexnord PN 2429678) Size 204 KD21 double-engagement disc coupling with 10.00" spacer, finished bore, and 3" max bore capacity. Non-lubricated, maintenance-free flexible disc design provides high torsional stiffness and accommodates angular, parallel, and axial misalignment. Ideal for pump, compressor, and fan drive applications requiring reliable, zero-backlash power transmission.

MODEL 2429678

BRAND

KOP-FLEX

SKU

2293989

WEIGHT

42.236 lb

UOM

each

UPC

662384153354

Contact supplier for technical support on: 800-626-2120

$4,136.29 Each

Prices are subject to change

FREE SHIPPING ON ORDERS OVER $100

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GET A QUOTE

Typically Ships in: 1 day

Returnable:No

Axial Capacity (+/-)

0.11

Bore Range (in)

1 to 3

Bore Size Max

3

Bore Size Min

1

Bore Type

Finished Bore

Configuration

2 standard hubs

Coupling Size

204

Coupling Type

Disc Coupling

Hub Material

Carbon steel

Length Through Bore standard hub (in)

2.38

Lube/Non-Lube

Non-Lubricated

Max Torque (ft-lb)

6000

Measurement System

Imperial

Rating HP @ 100 RPM

57.1

Speed Max (rpm)

13000

Stock C Dimension

10

Style

KD21

Torque Rating (in-lb)

36000

Total Length (One Hub Reverse) (in)

Total Length (One Hub Reverse) (in)

Total Length (Std Hub Post) (in)

14.76

Total WR2 (lb-in2)

160

  • Spacer coupling with economical 3-component design.
  • Unitized Disc Packs for ease of maintenance, replaceable without moving the connected equipment.
  • HT (High Torque) disc packs for medium and heavy duty applications.

Instruction Sheet
3D Drawing IGES
Catalog Page

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Alternatives Products from another supplier. Note, it may not be identical in style or function to original item
2429629

#2293710

Kop-Flex 103 KD21 SS500 FB (Rexnord PN 2429629) Size 103 KD Disc Coupling, Style KD21, 5.00" spacer, finished bore, 1.75" max bore. Non-lubricated double-engagement disc coupling provides maintenance-free operation with zero backlash and high torsional stiffness. Ideal for applications requiring precise shaft alignment and reliable torque transmission.

Brand

KOP-FLEX

Model

2429629

$2,056.80 Each
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2429637

#2293805

Kop-Flex 153 KD 21 SS500 FB (Rexnord PN 2429637) Size 153 KD Disc Coupling, Style KD21, 5.00" short spacer, finished bore. Double-engagement, maintenance-free design requires no lubrication. High-performance disc packs accommodate misalignment while transmitting torque in industrial drivelines.

Brand

KOP-FLEX

Model

2429637

$2,767.61 Each
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2429694

#2294176

Kop-Flex 254 KD 21 SS500 FB (Rexnord PN 2429694) Size 254 KD Disc Coupling, Style KD21, with 5.00" short spacer and finished bore. 7.62" outside diameter, 3.75" max bore, maintenance-free non-lubricated design. Double-engagement disc coupling for reliable torque transmission in industrial drivetrains.

Brand

KOP-FLEX

Model

2429694

$4,012.72 Each
Free Shipping orders over $100
2429645

#2293993

Kop-Flex 204 KD 21 SS500 FB (2429645) Size 204 KD Disc Coupling, Style KD21 double-engagement design, finished bore, 5.00" standard spacer. Maintenance-free, non-lubricated flexible disc coupling with zero backlash and high torsional stiffness. Suitable for industrial driveline applications requiring precision and reliability.

Brand

KOP-FLEX

Model

2429645

$3,743.08 Each
Free Shipping orders over $100
2429611

#2293708

Kop-Flex 103 KD 21 SS350 FB (Rexnord PN 2429611) Size 103 KD Disc Coupling, Style KD21, 3.50" short spacer, finished bore, 1.75" max bore. Maintenance-free flexible disc design requires no lubrication, providing reliable torque transmission and misalignment accommodation for industrial drivelines.

Brand

KOP-FLEX

Model

2429611

$2,056.80 Each
Free Shipping orders over $100
2429652

#2293995

Kop-Flex 204 KD 21 SS700 FB (Rexnord PN 2429652) Size 204 KD disc coupling, Style KD21, 7.00" short spacer, finished bore. Double-engagement, maintenance-free design requires no lubrication and delivers zero backlash with high torsional stiffness. Ideal for high-performance applications demanding precise motion control and reliable power transmission.

Brand

KOP-FLEX

Model

2429652

$3,743.08 Each
Free Shipping orders over $100
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