Nexen 822581 is a spring engaged, air released shaft mount brake with a 25 mm machined bore with keyway. It delivers 340 Nm of static brake torque and a max speed of 1800 RPM. The open design features a black oxide finish and high coefficient brake facing. Suitable for cyclic dynamic, e-stop, and holding applications.

Anti rotation style

Anti-Rotation Holes, Optional Torque Pin Bracket

Approximate brake facing life

3729 kWhr

Bore details

Unfinished Pilot Bore

Bore size

25 mm, Machined Bore with Keyway

Bore style

Machined Bore with Keyway

Brake facing edge color code

Purple

Brake facing effective area

324 cm²

Brake facing type

High Coefficient

Brake heat sink capacity

271000 Joule

Brake peak thermal input rate

33.60 kW

Brake response factor

0.398

Brake torque

340 Nm

Braking capability

Cyclic Dynamic, E-Stop, Holding

CE certified

CE

Engagement method

Spring

Finish

Black oxide

Inlet size

0.125 BSPT

Input keyway

None, Customer Supplied

Input shaft securement

None, Customer Supplied

Length

138.0 mm

Materials of construction

Black oxide

Max allowable pressure (bar)

8.3

Max ambient temperature (°F)

150

Max brake continuous thermal dissipation

2.23 kW

Max Speed

1800 RPM

Max static brake torque

340 Nm

Min ambient temperature (°F)

32

Min release pressure (bar)

5.0

Mounting style

Shaft

Open or enclosed design

Open

Outer Diameter

302.0 mm

Output shaft style

None

Product features

Spring Engaged, Shaft Mount, Straight Bore

Release method

Air

Restrictions

Consult Nexen For Use In Cyclic Applications

RoHS compliant

RoHS

Shaft inertia

826 kgcm²

Unit height

7 in

Unit width

16.5 in