Products Catalog
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 amore
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

350DBBS

Dimension D

29.29 in744 mm

Dimension D1

14.49 in368 mm

Dimension D31

3.50 in

Dimension D44

0.25 in

Dimension D45

2.00 in

Dimension H16

23.00 in
Dimension J1 46.25 in

Dimension J1

57.64 in

Dimension O2

1/2 NPT

Minimum Bore

13.90 in353 mm

Maximum Bore

15.51 in394 mm

Dynamic Torque Rating

4555000 lb·in514689 Nm

Worn Torque Multiplier

0.77

Disc & Gear (Inertia)

4895 lb·ft²206.28 kg·m²

Disc & Gear (Weight)

2738 lb1242 kg

Housing (Weight)

8685 lb3939 kg
Minimum Releasing Pressure2 120 psi8.3 bar

Maximum Speed

600 rpm

Manufacturer

Eaton-Airflex

Actuation

Spring Applied, Air Release

Note

N/A Tolerance +0.120/-0.120 in (+3.00/-3.00 mm)
Brake in disengaged position.
Basic part number only. Does not include gear. Gear must be ordered separately with bore and keyway requirements.

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