Related Manuals for Kobelt 5027-SA
Summary of Contents for Kobelt 5027-SA
- Page 1 5027-SA DISK BRAKE SPRING / AIR VERSION Owner’s Operation, Installation & Maintenance Manual KOBELT MANUFACTURING CO. LTD MNL-5027-SA (rev B)
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Page 2: Table Of Contents
4.2.3 Pressure ........................16 4.2.4 Disc speed ........................ 16 Maintenance ....................... 17 Preventative Maintenance ................... 17 Inspection ........................17 5.2.1 Pad Wear ......................... 17 5.2.2 Seals ......................... 17 5.2.3 Actuator Test ......................17 KOBELT MANUFACTURING CO. LTD MNL-5027-SA (rev B) - Page 3 Stroke Adjustment ....................19 5.3.3 Spring Actuators ...................... 20 5.3.4 Brake Linings ......................20 Recommended Spares ....................21 Warranty ........................22 Appendix A: Technical Drawings ................... 23 Appendix B: Parts List Drawings ................... 25 KOBELT MANUFACTURING CO. LTD MNL-5027-SA (rev B)
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Page 4: Introduction
• Do not carry out any modifications to the product. • Only use authentic Kobelt spare parts. • Observe all local regulations, directives and laws during the installation of this product. • All installation, commissioning and maintenance work must only be conducted by qualified personnel. -
Page 5: Hazards
Ensure all power sources are locked out prior to performing work. HIGH PRESSURE FLUIDS Kobelt lever brakes use high pressure hydraulics or air. Ensure all pressure is exhausted and the pressure source locked out prior to performing work. HOT SURFACES Disc brakes are capable of making the surfaces of the brake disc dangerously hot when burnishing or during braking events. -
Page 6: Product Description
The diagram below shows a typical Kobelt caliper brake with all the major components identified. All of the Kobelt caliper brakes can be fitted with either air applied, hydraulic applied, spring applied with air released or spring applied with hydraulic released actuators depending on the required service. -
Page 7: Model Code Key
[114 kg] 1) Requires a minimum wide face 5.12 in [130 mm] Technical data and specifications are also available from our datasheet posted on www.kobelt.com the technical drawings in Appendix 1.5 M ODEL KOBELT MANUFACTURING CO. LTD MNL-5027-SA (rev B) -
Page 8: Installation
International tolerance class. Allowable run out is proportional disc O.D. Parking brakes and emergency brakes with stopping times of 10 seconds or less are considered light duty. Ventilated discs are exempted from this requirement KOBELT MANUFACTURING CO. LTD MNL-5027-SA (rev B) - Page 9 The cooling air pumped through the disc must be exhausted away from the outer diameter of the disc to allow fresh, cool air to enter the inner vent opening of the disc. KOBELT MANUFACTURING CO. LTD MNL-5027-SA (rev B)
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Page 10: Caliper Brakes
5 ft [1524 mm] 6.5 ft [1981 mm] All piping must be cleaned prior to connection to the actuators. Welded carbon steel piping must be pickled to remove the scale produced by welding. KOBELT MANUFACTURING CO. LTD MNL-5027-SA (rev B) -
Page 11: Instrumentation
2.3.3 Instrumentation Kobelt caliper disc brakes may be equipped with sensors and switches, such as the 6233-MSKIT. The connection to the instruments must be made by cable or flexible conduit. Follow the governing electrical code for wiring practices. Use only hardware approved for the zone that the brake is installed in. -
Page 12: Commissioning
3.2 F LUSHING Kobelt spring applied, air released disc brakes may be used in low pressure hydraulic applications. Before subjecting the brake system to full hydraulic pressure, the brake lines must be flushed to an ISO 4406 cleanliness rating of 19/17/14. -
Page 13: Burnishing
Partially releasing the brake with fluid pressure to a level that the drive can tolerate, or b) In systems with more than one brake, isolate all but one brake and burnish one brake at a time. KOBELT MANUFACTURING CO. LTD MNL-5027-SA (rev B) -
Page 14: Torque Test
Before putting equipment into service, confirm that full rated braking torque has been achieved through load testing or a torque test against the drive motors. If full brake torque has not been achieved, continue burnishing. KOBELT MANUFACTURING CO. LTD MNL-5027-SA (rev B) -
Page 15: Operation
In applications where the brakes cycle infrequently with significant changes in ambient temperature it may be necessary to provide a thermal relief to protect the actuators from over pressurization due to thermal expansion. KOBELT MANUFACTURING CO. LTD MNL-5027-SA (rev B) -
Page 16: Control
4.2 S ERVICE IMITS 4.2.1 Disc Temperature The Kobelt brake lining achieves maximum friction at 300 F. Over 300 F the brake begins to fade or experience diminishing friction. The maximum operating temperature of the brake linings is 700 F [371 C]. -
Page 17: Maintenance
Occasionally it may be necessary to test the actuator springs as a means of trouble shooting. The easiest method is to measure the hold-off and release pressure of the actuator. The release pressure is defined as the minimum pressure required to fully retract the actuator whereas KOBELT MANUFACTURING CO. LTD MNL-5027-SA (rev B) -
Page 18: Pin Wear
Brake Disc Minimum Thickness Disc Series Original Thickness Minimum Thickness in [mm] in [mm] 2-4-XX 2.00 [50.8] 1.90 [48.5] When re-machining the disc surface, equal amounts must be taken off of each face. KOBELT MANUFACTURING CO. LTD MNL-5027-SA (rev B) -
Page 19: Service
This is to prevent premature seal wear and reduce seal friction. All Kobelt calipers, during assembly, are pre-greased on the shoe pin and saddle pin with a Lithium based NLGI 2 grease. These pins must be re-greased no less than once annually. -
Page 20: Spring Actuators
When re-installing the shoes into the caliper assembly, be sure to re-engage the balancing links “A”. If there is insufficient room radially to remove the shoe, then screws ‘C’ must be removed. KOBELT MANUFACTURING CO. LTD MNL-5027-SA (rev B) -
Page 21: Recommended Spares
‘C’. Tighten screws ‘C’ to 37 ft-lbs [ 50 Nm]. ECOMMENDED PARES The spare parts kept on hand will depend on the severity of the service. As a minimum Kobelt recommends keeping the following parts for each brake in service: 1. One Lined set of brake shoes 2. -
Page 22: Warranty
If any part is found to be defective, Kobelt will replace said part FOB the Kobelt factory provided that any such defective part is returned by the Buyer with freight and applicable forwarding charges prepaid by the Buyer. -
Page 23: Appendix A: Technical Drawings
A: T PPENDIX ECHNICAL RAWINGS KOBELT MANUFACTURING CO. LTD MNL-5027-SA (rev B) - Page 24 KOBELT MANUFACTURING CO. LTD MNL-5027-SA (rev B)
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Page 25: Appendix B: Parts List Drawings
B: P PPENDIX ARTS RAWINGS 5027-SA KOBELT MANUFACTURING CO. LTD MNL-5027-SA (rev B) - Page 26 CLEVIS PIN, 1/2" DIA 1026-0516 COTTER PIN, 1/8" X 1", SS 5024-0012 BALANCE LINK NO. 2, 5024 CALIPER 1023-0216 FLAT WASHER, 1/4, TYPE B, NARROW 1002-1010 SCREW, SKT HD, 1/4 UNC X 5/8 LG, 18-8 SS KOBELT MANUFACTURING CO. LTD MNL-5027-SA (rev B)
- Page 27 5027-SAW KOBELT MANUFACTURING CO. LTD MNL-5027-SA (rev B)
- Page 28 CLEVIS PIN, 1/2" DIA 1026-0516 COTTER PIN, 1/8" X 1", SS 5024-0012 BALANCE LINK NO. 2, 5024 CALIPER 1023-0216 FLAT WASHER, 1/4, TYPE B, NARROW 1002-1010 SCREW, SKT HD, 1/4 UNC X 5/8 LG, 18-8 SS KOBELT MANUFACTURING CO. LTD MNL-5027-SA (rev B)
- Page 29 SCREW, SKT HD, 1/4-20 UNC X 2-1/4, S/S 1201-0229 SPRING, COMPRESSION, 1.45 OD X .177 WIRE X 12.31 LG 1201-0230 SPRING, COMPRESSION, 2.00 OD X .250 WIRE X 13.0 LG 6230-0011 SPRING GUIDE, 1" 6233-RK SEAL KIT, 6233 ACTUATOR KOBELT MANUFACTURING CO. LTD MNL-5027-SA (rev B)
- Page 30 5027-LS KOBELT MANUFACTURING CO. LTD MNL-5027-SA (rev B) Digitally signed by Heiko Epkens Heiko Epkens Date: 2022.11.01 16:07:37 -07'00'...