Nexen 828190 is an air engaged shaft mount brake with a 50 mm straight machined bore with keyway. It features a black oxide finish, open design, and spring release. Rated for 1800 RPM and 252 Nm max static torque, it supports continuous slip, cyclic dynamic, e-stop, and holding braking. The brake has a 0.250 BSPT inlet and includes flange mounting with optional torque pin bracket.

Anti rotation style

Flange, Optional Torque Pin Bracket

Approximate brake facing life

5736 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

Green

Brake facing effective area

324 cm²

Brake facing type

Low Coefficient

Brake heat sink capacity

271000 Joule

Brake peak thermal input rate

33.60 kW

Brake response factor

0.398

Brake torque

252 Nm

Braking capability

Continuous Slip, Cyclic Dynamic, E-Stop, Holding

CE certified

CE

Enclosure

Open

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

252 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

Output shaft style

None

Product features

Air Engaged, Metric, Shaft Mount, Straight Bore

Release method

Spring

RoHS compliant

RoHS

RPM

1800

Shaft inertia

826 kgcm²

Unit height

6.5 in

Unit width

12.5 in