Commercial Vehicle Systems Product DATA PD-403-200 Function This range of Brake Chambers is used on axles fitted with drum brakes. The single diaphragm cylinder provides the service brake function. In addition Brake Chamber BX321 has no central air port, so its air pressure plate is flat and it is often used in interlock systems on trailers. See PD-400-000, Document No. Y115383 for the full range of Brake Chambers for trailers. Technical Features Maximum Operating Pressure: 8.5 bar Operating Temperature Range: -40 C to +80 C Push rod stroke: 75 mm Air ports: centre & side Surface treatment: Powder coated Weight: See table Standard Symbol as DIN ISO 9 BZ 3... Range Overview Part No. Type No. Type Push Rod Seal TÜV Inspection Report Weight approx. [kg] II39908FA BZ321 12 2.1 II33198A BZ3370 1 2.7 II33479A BX3417 20 3.2 Sealing Washer II33441A BX3534 24 3.5 II33445A BX5 4.3 31-0024-04-FBKV K11527A BX321 4.3 II40324FA BZ323 12 2.1 II33458A BX341 20 3.2 Rubber Boot II33442A BX3535 24 3.5 II33444A BX4 4.3 Other versions are available. 1
PD-403-200 Product Data Push Rod Seal Rubber Boot Sealing Washer Installation Kits/Yokes for Part No. Yoke type Description SEB01321 Round hole Installation Kit with Yoke to suit Types 12 and 1 SEB01322 Slotted hole SEB01314 Round hole Forged Yoke for Types 20, 24 and SEB01315 Round hole Installation Kit with Yoke to suit Types 20, 24 and SEB0131 Slotted hole 5 1 3 ø18 3.5 8 9 7 5 2 57 ø18 ø14 h11 ø14 h11 5 78 54 10 4 3 14.5 10 4 3 3.5 14.5 3 Legend: 1 Yoke, round hole (SEB01315, SEB01321) 2 Yoke, slotted hole (SEB0131, SEB01322) 3 Bolt 4 Split pin 5 Plain nut Self-locking nut M12 1) 7 Self-locking nut M1 8 Screw plug 9 Sealing ring 10 Washer 135 1) for Typ 12 and 1 2
Commercial Vehicle Systems PD-403-200 Dimensions 45 E K C G * H 3 A F B D ø J Part No. Type No. Type [sq in] A B C D E F G H J K II39908FA II40324FA II33198A II33458A II33479A II33441A II33442A II33444A II33445A K11527A BZ321 BZ323 BZ3370 BX341 BX3417 BX3534 BX3535 BX4 BX5 BX321 12 12 1 20 20 24 24 7.2 7.2 7.2 145 145 17 175 175 188 188 209 209 212 92 92 101 105 105 111 111 128 95 95 99 10 10 37 37 38 42.7 42.7 42.0 M12x1.75 M12x1.75 M12x1.75 5 5 7 82 82 90 90 99 99-141 149 149 11 11 184 184-127 127 132.5 132.5 132.5 133.0 133.0 139.5 139.5 - * not for K11527A-BX321 3
PD-403-200 Product Data Mounting Position Design: I Type 12"-" Type with single piece clamp ring Design: II Type " Type with two piece clamp ring Part No. Type No. Type [sq in] Air Port Angle α Angle β Clamp Ring Design α β α = air port angle β = clamp ring angle α β II39908FA BZ321 12 I II40324FA BZ323 12 I II33198A BZ3370 1 I II33458A BX341 20 I II33479A BX3417 20 I 0 135 II33441A BX3534 24 I II33442A BX3535 24 I II33444A BX4 II II33445A BX5 II K11527A BX321 I 4
Commercial Vehicle Systems PD-403-200 Performance Charts Type 12 Type 24 Stroke Type 1 Stroke Type Stroke BX321 Type 20 Stroke Stroke The output forces correspond to the requirements of DIN 7400 Th A = Piston force, average S P = Effective piston stroke V = at 2/3 of stroke as seen in the TÜV report 31-0024-04-FBKV. Type 12 1 20 24 Th A [KN] at 4.4.92 8.11 9. 12.0 S P at 8.00 8.88 8.88 71.00 74.50 V [l] 0.50 0.75 0.85 0.93 1. 5
PD-403-200 Product Data Installation and Mounting instructions For reliable and safe mounting of brake chambers, please note the following points: Use suitable mounting bracket with adequate stability (material thickness). Hole dimensions according to DIN. Plain mounting face, only primed (maximum thickness 0.1mm), not finish painted. Direct contact of the full surface of the brake chamber mounting face must be made with the mounting bracket. No spacing washers, adapter plates or other elements are allowed. Check length of push rod, it may need to be shortened. The angle between push rod and slack adjuster and between push rod and mounting bracket should be approximately 90 deg. when the push rod is at its mid-stroke position. During installation, the slack adjuster should be rotated towards the yoke to insert the yoke pin. On no account should the push rod be pulled out from the brake chamber to meet the slack adjuster. Maximum pivoting angle of push rod in all directions = 3. For mounting studs, use only self-locking nuts without washers of any kind. General requirements of mechanical engineering concerning progressive tightening must be followed. Tightening torque 180 + Nm for M1 x 1.5 thread. Tightening torque 75 +15 Nm for M12 x 1.75 thread. For further information please contact the Knorr-Bremse, the axle or trailer manufacturer. Revision Details Rev. 004 September 2011 Revised for new Trailer Catalogue layout Rev. 005 K11527A-BX321 added.