Nexen 828012 is an air engaged shaft mount brake with a 21 mm unfinished blank bore that can be finished up to 50 mm. It features a black oxide finish, open design, and flange or shaft mounting. Rated for 1800 RPM and 197 Nm max static torque, it is suitable for continuous slip, cyclic dynamic, e-stop, and holding applications.

Anti rotation style

Flange, Optional Torque Pin Bracket

Approximate brake facing life

914 kWhr

Approximate engagement response time

70 ms

Backlash

0.39 °

Bore details

Unfinished Pilot Bore

Bore size

21 mm, Blank Bore can be finished up to 50 mm

Bore style

Unfinished Blank Bore

Brake air chamber volume when new

28.251 cm³

Brake air chamber volume when worn out

85.098 cm³

Brake facing edge color code

Red

Brake facing effective area

198 cm²

Brake facing type

Standard coefficient

Brake heat sink capacity

170000 Joule

Brake peak thermal input rate

20.90 kW

Brake response factor

0.199

Brake torque

197 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

None, Customer Supplied

Input shaft securement

None, Customer Supplied

Length

92.1 mm

Materials of construction

Black oxide

Max allowable pressure (bar)

8.3

Max ambient temperature (°C)

66

Max bore size

50 mm

Max brake continuous thermal dissipation

1.60 kW

Max operating pressure (bar)

6.0

Max Speed

1800 RPM

Max static brake torque

197 Nm

Min ambient temperature (°C)

0

Min bore size

21 mm

Min engagement pressure (bar)

0.2

Mounting style

Flange, Shaft

Open or enclosed design

Open

Outer Diameter

228.6 mm

Output shaft style

None

Product features

Air Engaged, Metric, Shaft Mount, Straight Bore

Release method

Spring

RoHS compliant

RoHS

RPM

1800

Shaft inertia

335 kgcm²

Unit height

10.75 in

Unit width

9.25 in