Related Manuals for Kobelt 5026-SA
Summary of Contents for Kobelt 5026-SA
- Page 1 5026-SA DISK BRAKE SPRING / AIR VERSION Owner’s Operation, Installation & Maintenance Manual KOBELT MANUFACTURING CO. LTD MNL-5026-SA.docx (rev A)
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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-5026-SA.docx (rev A) - Page 3 Wear Indicating Limit Switch .................. 20 5.3.5 Spring Actuators...................... 21 5.3.6 Brake Linings ......................21 Recommended Spares....................22 Warranty ........................24 Revision History ......................25 Appendix A: Technical Drawings ................... 26 Appendix B: Parts List Drawings ................... 28 KOBELT MANUFACTURING CO. LTD MNL-5026-SA.docx (rev A)
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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
Brakes contain numerous pinch points which can cause serious injury. Ensure all power sources are locked out prior to performing work. High Pressure Fluids: Kobelt lever brakes use high pressure hydraulics. 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
1) Requires a minimum 7.28 in [185 mm] wide face Technical data and specifications are also available from our datasheet posted on www.kobelt.com the technical drawings in Appendix A. 1.5 M ODEL C F 1 KOBELT MANUFACTURING CO. LTD MNL-5026-SA.docx (rev A) -
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-5026-SA.docx (rev A) - 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-5026-SA.docx (rev A)
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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-5026-SA.docx (rev A) -
Page 11: Instrumentation
2.3.3 Instrumentation Kobelt caliper disc brakes may be equipped with sensors and switches, such as the • 6230-MSKIT brake release indicating switch kit or, • 6230-WSKIT brake wear indicating switch kit The connection to the switch must be made by cable or flexible conduit and a ½... -
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: Function Test
Disc temperature must not exceed 700°F (371°C) or permanent degradation of the lining may occur. KOBELT MANUFACTURING CO. LTD MNL-5026-SA.docx (rev A) -
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-5026-SA.docx (rev A) -
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-5026-SA.docx (rev A) -
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-5026-SA.docx (rev A) -
Page 18: Pin Wear
Brake Disc Minimum Thickness Disc Series Original Thickness Minimum Thickness in [mm] in [mm] 4-07-XX 4.00 [101.6] 3.88 [98.6] When re-machining the disc surface, equal amounts must be taken off of each face. KOBELT MANUFACTURING CO. LTD MNL-5026-SA.docx (rev A) -
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: Release Limit Switch
/1 ” Step 2: With the switch loose pressurize the brake to retract the actuator. ½” [13mm] maximum gap between the switch plunger and the pin. Step 4: Retighten the two mounting screws. KOBELT MANUFACTURING CO. LTD MNL-5026-SA.docx (rev A) -
Page 21: 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-5026-SA.docx (rev A) -
Page 22: Recommended Spares
37 ft-lbs [50.2 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 23 Friction Code Lined Shoe Friction Material 5026-LSN5 non-sparking 5026-LSC5 low COF (.12-.15) 5026-LSE5 mid COF (.25-.28) KOBELT MANUFACTURING CO. LTD MNL-5026-SA.docx (rev A)
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Page 24: 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 25: Revision History
EVISION ISTORY Table 7: Revision History Document Release Author Revision Summary Revision Date • 2025-03-28 Initial release KOBELT MANUFACTURING CO. LTD MNL-5026-SA.docx (rev A) -
Page 26: Appendix A: Technical Drawings
A: T PPENDIX ECHNICAL RAWINGS KOBELT MANUFACTURING CO. LTD MNL-5026-SA.docx (rev A) - Page 27 KOBELT MANUFACTURING CO. LTD MNL-5026-SA.docx (rev A)
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Page 28: Appendix B: Parts List Drawings
B: P PPENDIX ARTS RAWINGS 5026-SA KOBELT MANUFACTURING CO. LTD MNL-5026-SA.docx (rev A) - Page 29 SCREW, SKT HD, 1/2-13 UNC X 1-1/4, SS 1002-1010 SCREW, SKT HD, 1/4 UNC X 5/8 LG, 18-8 SS 1023-0216 FLAT WASHER, 1/4, TYPE B, NARROW 6230-0010 CLEVIS PIN, 1/2" DIA 1026-0516 COTTER PIN, 1/8" X 1", SS KOBELT MANUFACTURING CO. LTD MNL-5026-SA.docx (rev A)
- Page 30 5026-SAW KOBELT MANUFACTURING CO. LTD MNL-5026-SA.docx (rev A)
- Page 31 ACTUATOR, SPRING APP / AIR REL, 120 PSI 5025-0012 BALANCING LINK, FORK END, 5025 CALIPER 1002-1010 SCREW, SKT HD, 1/4 UNC X 5/8 LG, 18-8 SS 1023-0216 FLAT WASHER, 1/4, TYPE B, NARROW KOBELT MANUFACTURING CO. LTD MNL-5026-SA.docx (rev A)
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Page 32: Part Description
NUT, JAM, 3/4-10 UNC, SS 1002-1032 SCREW, SCKT HD, 1/4-20 UNC X 2, SS 1002-1012 SCREW, SCKT HD, 1/4-20 UNC X 3/4, SS 1002-1116 SCREW, SCKT HD, 5/16-18 UNC X 1, SS 6230-RK-W SEAL KIT, 6230 ACTUATOR KOBELT MANUFACTURING CO. LTD MNL-5026-SA.docx (rev A) - Page 33 5026-LS KOBELT MANUFACTURING CO. LTD MNL-5026-SA.docx (rev A) Heiko Digitally signed by Heiko Epkens Epkens Date: 2025.03.31 09:31:44 -07'00'...
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