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Model DBB brakes are spring applied, pressure released, disc style brakes. They develop equal torque in either direction of rotation. Their torque and thermal capacities allow them to be used in the most demanding applications.

Brake construction and operation is shown in the figure. Pressurizing the brake compresses the brake springs and withdraws the clamping plates from the brake discs. Standard brakes are furnished with either one or two discs, which are free to move axially.

Model DBB uses a
more
Unit of Measure

Features

N/A Low inertia friction disc assembly.
Reduces the overall inertia that must be stopped.

Optional split friction discs.
Allows removal of friction discs without disturbing other components of drive system in mid-shaft brake arrangement.

Long wearing, self lubricating PolyPak seals.
Eliminates premature twisting failure and requires no external lubrication.

Where Used

N/A

  • Bottling equipment
  • Power Shovels
  • Conveyors
  • Shears
  • Power Presses

Specifications

Model

215DBB

Dimension D

11.16 in283 mm

Dimension D1

4.38 in111 mm

Dimension W4

9.23 in235 mm

Dimension D31

1.47 in37 mm

Dimension D44

0.38 in10 mm

Dimension D45

0.38 in10 mm

Dimension H16

6.00 in152 mm
Dimension J1 18.375 in466.7 mm

Dimension J1

14.375 in365.1 mm

Dimension J2

18.94 in481 mm

Dimension O2

1/2-14 NPT

Minimum Bore

3.06 in78 mm

Maximum Bore

4.25 in108 mm

Dynamic Torque Rating

57000 lb·in6435 Nm

Disc & Gear (Inertia)

10 lb·ft²0.42 kg·m²

Disc & Gear (Weight)

64 lb29 kg

Housing (Weight)

275 lb125 kg
Minimum Releasing Pressure2 60 psi4.1 bar

Maximum Speed

2400 rpm

Manufacturer

Eaton-Airflex

Actuation

Spring Applied, Air Release

Note

N/A Tolerance +0.000/-0.003 in (+0.00/-0.08 mm)
All DBB brakes can be supplied plumbed as shown with a flow control valve having American National Pipe thread ports of 1/2-14 for size 9DBB, 3/4-14 for sizes 15DBB, 20 DBB, 25DBB and 1-11 1/2 for size 38DBB

  • 1 Tolerance +0.000/-0.005 in (+0.00/-0.08 mm)
  • 2 Maximum allowable cylinder pressure is 120 psi (8.3 bar).