Nexen 800121 is an air engaged shaft mount clutch with a 0.625 in machined bore with keyway. It features an open design, black oxide finish, and ultra low coefficient clutch facing. Rated for 3600 RPM and 34 inlb max dynamic torque, it is suitable for general power transmission applications requiring precise engagement.

Anti rotation style

Optional brake adapter fixes output with anti-rotation slot

Approximate clutch facing life

91 hphr

Bore details

Straight

Bore size

0.625 in, Machined Bore with Keyway, 0.500 in with Optional Adapter Bushing

Bore style

Machined Bore with Keyway, Nexen Adapter Bushing Required

CE certified

CE

Clutch air chamber volume when new

0.201 in³

Clutch air chamber volume when worn out

0.630 in³

Clutch facing edge color code

Blue

Clutch facing effective area

4.17 in²

Clutch Facing Type

Ultra Low Coefficient

Clutch heat sink capacity

5650 ftlb

Clutch peak thermal input rate

3.80 hp

Clutch response factor

0.038

Drive inertia

0.86 lbin²

Enclosure

Open

Engagement method

Air

Finish

Black oxide

Inlet size

0.125 NPT

Input bore min shaft insertion

1.50 in, From Pilot End Full From Air Chamber End

Length

3.51 in

Materials of construction

Black oxide

Max ambient temperature (°F)

150

Max bore size

15.875 mm

Max clutch continuous thermal dissipation

0.13 hp

Max dynamic torque

34 inlb

Max Speed

3600 RPM

Min ambient temperature (°F)

32

Min bore size

12.7 mm

Min sprocket size

25/40T, 35/28T, 40/22T

Mounting style

Shaft

Open or enclosed design

Open

Operating range (psi)

3-85

Outer Diameter

2.89 in

Output bolt circle

2.437 in

Output bolt hole size

4 #10-32 in, Holes @ 90°

Output shaft style

None

Output type

Pilot

Pilot size

2.125 in

Product features

Air Engaged, Keyed, Straight Bore, Shaft Mount

Release method

Spring

RoHS compliant

RoHS

RPM

3600

Shaft inertia

0.98 lbin²