Nexen 828191 is an air engaged shaft mount brake with a 50 mm machined bore with keyway. It delivers 420 Nm of static brake torque and operates at speeds up to 1800 RPM. The open design features a black oxide finish and a flange anti-rotation style. Suitable for continuous slip, cyclic dynamic, e-stop, and holding applications.

Anti rotation style

Flange, Optional Torque Pin Bracket

Approximate brake facing life

2286 kWhr

Approximate engagement response time

70 ms

Bore details

Straight

Bore size

50 mm, Machined Bore with Keyway

Bore style

Machined Bore with Keyway

Brake air chamber volume when new

30.267 cm³

Brake air chamber volume when worn out

175.456 cm³

Brake facing edge color code

Red

Brake facing effective area

324 cm²

Brake facing type

Standard coefficient

Brake heat sink capacity

271000 Joule

Brake peak thermal input rate

33.60 kW

Brake torque

420 Nm

Braking capability

Continuous Slip, Cyclic Dynamic, E-Stop, Holding

CE certified

CE

Engagement method

Air

Finish

Black oxide

Inlet size

0.250 BSPT

Input keyway

14W x 9H x 100.8L mm

Input shaft securement

3, M6 x 1.0 , Set Screws @ 120°

Length

102.4 mm

Materials of construction

Black oxide

Max allowable pressure (bar)

8.3

Max ambient temperature (°C)

66

Max brake continuous thermal dissipation

2.23 kW

Max operating pressure (bar)

6.0

Max Speed

1800 RPM

Max static brake torque

420 Nm

Min ambient temperature (°C)

0

Min engagement pressure (bar)

0.2

Mounting style

Flange, Shaft

Open or enclosed design

Open

Outer Diameter

301.8 mm

Product features

Air Engaged, Metric, Shaft Mount, Straight Bore

Release method

Spring

RoHS compliant

RoHS

Shaft inertia

826 kgcm²