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Summary of Contents for SCHUNK TANDEM KRH3
- Page 1 Clamping force block TANDEM KRH3, KRH3-LH Assembly and Operating Manual Translation of Original Operating Manual...
- Page 2 Imprint Imprint Copyright: This manual is protected by copyright. The author is SCHUNK SE & Co. KG. All rights reserved. Technical changes: We reserve the right to make alterations for the purpose of technical improvement. Document number: 1527471 Version: 03.00 | 10/09/2024 | en...
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Page 3: Table Of Contents
5.2.2 Dynamic pressure monitoring of the jaw end positions (variant "PM") ... 22 5.2.3 Air coupling in top jaws (variant "PM") ........... 23 5.2.4 Hydraulic circuit diagram ............. 25 03.00 | TANDEM KRH3, KRH3-LH | Clamping force block | en | 1527471... - Page 4 9.1.2 Monitoring sealing kit / connection ..........39 9.2 Accessory kits ..................40 9.3 Parts lists ..................40 10 Assembly drawings ................42 10.1 KRH3, KRH3-LH ................... 42 11 Manufacturer certificate................. 43 03.00 | TANDEM KRH3, KRH3-LH | Clamping force block | en | 1527471...
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Page 5: General
Catalog data sheet for the attached product * Technical data sheet for optional attachments * Approval drawings Documents marked with a star (*) can be downloaded at schunk.com. 03.00 | TANDEM KRH3, KRH3-LH | Clamping force block | en | 1527471... -
Page 6: Sizes
("opening" and "closing"). 1.3 Scope of Delivery Clamping force block KRH3 or KRH3-LH (without top jaws) ACCESSORY KIT: (for contents, see sealing kit list and parts list) } 9.1 [/ 39] 03.00 | TANDEM KRH3, KRH3-LH | Clamping force block | en | 1527471... -
Page 7: Basic Safety Notes
100 RPM without consulting SCHUNK. the product is brought into contact with aggressive media, especially acids. the product is used in abrasive blasting processes, especially sandblasting. 03.00 | TANDEM KRH3, KRH3-LH | Clamping force block | en | 1527471... -
Page 8: Structural Changes
Renolit HLT2 are incorporated into the product as auxiliary and operating materials. The safety data sheet for Microgleit LP 410 can be found at www.schunk.com. 03.00 | TANDEM KRH3, KRH3-LH | Clamping force block | en | 1527471... -
Page 9: Chuck Jaws
Qualified electricians have the professional training, knowledge, and experience to work on electrical systems, to recognize and avoid potential dangers, and know the relevant standards and regulations. 03.00 | TANDEM KRH3, KRH3-LH | Clamping force block | en | 1527471... -
Page 10: Personal Protective Equipment
2.12 Protection during commissioning and operation Falling or violently ejected components Falling and ejected components can lead to serious injury or death. Take suitable protective measures to secure the danger zone. 03.00 | TANDEM KRH3, KRH3-LH | Clamping force block | en | 1527471... -
Page 11: Notes On Safe Operation
Ensure that no residual energy remains in the system. Do not reach into the open mechanism or movement area of the product during operation. 03.00 | TANDEM KRH3, KRH3-LH | Clamping force block | en | 1527471... -
Page 12: Protection Against Dangerous Movements
Do not reach between the workpiece and the chuck jaw during the clamping procedure. Implement the safety functions according to the integrator's risk assessment. 03.00 | TANDEM KRH3, KRH3-LH | Clamping force block | en | 1527471... - Page 13 Ensure that the clamping pressure is applied to the clamping force block while the workpiece is being machined. Re-clamping of the workpiece with manual or pneumatic clamping force blocks. 03.00 | TANDEM KRH3, KRH3-LH | Clamping force block | en | 1527471...
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Page 14: Technical Data
Clamping force is the arithmetic sum of the individual forces occurring at the chuck jaws at distance "H" (see also catalog). Distribution of the clamping position with 100 consecutive clamping operations. 03.00 | TANDEM KRH3, KRH3-LH | Clamping force block | en | 1527471... - Page 15 Technical data Optional Z variant ±0.01 mm to clamping center Clamping sleeve ±0.04 mm to clamping center Fitting screw ±0.02 mm to clamping center Only with variant "PM" 03.00 | TANDEM KRH3, KRH3-LH | Clamping force block | en | 1527471...
- Page 16 12f7 14f7 14f7 Ø R [mm] S [mm] Ø T [mm] 97.5 U [mm] 18.7 V [mm] W [mm] X [mm] Y [mm] 10.5 18.5 Z [mm] 03.00 | TANDEM KRH3, KRH3-LH | Clamping force block | en | 1527471...
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Page 17: Tightening Torques For Screws
Screw size KRH3 / KRH3-LH Tightening torque (Nm) Tightening torques for mounting the cover on the body (screw quality A2-70) Size Screw size Tightening torque M (Nm) 03.00 | TANDEM KRH3, KRH3-LH | Clamping force block | en | 1527471... -
Page 18: Assembly And Connection
5.1 Assembly of the Clamping Block on the machine table Cylindrical pins Ø M6 } 9.3 [/ 40] Fitting screw Ø f7 } 9.3 [/ 40] Screw DIN EN ISO 4762 Clamping sleeve DIN EN ISO 13337 03.00 | TANDEM KRH3, KRH3-LH | Clamping force block | en | 1527471... - Page 19 (item 84). The two cylindrical pins (item 34) are used for alignment with repeat accuracy. Do not realign the clamping force block after removing it from the machine table (e.g. after replacing the seals). 03.00 | TANDEM KRH3, KRH3-LH | Clamping force block | en | 1527471...
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Page 20: Connecting The Clamping Force Block
Bottom connection for coolant drain or use for air purge Bottom connection for lubrication (one-sided supply, left) Bottom connection for lubrication (one-sided supply, right) Air coupling in top jaw 1 03.00 | TANDEM KRH3, KRH3-LH | Clamping force block | en | 1527471... -
Page 21: Supply Lines
Ø 5.28 x 1.78 Connection Ø A [mm] 1 - 8 Ø B [mm] T [mm] O-ring* [mm] Ø 5.28 x 1.78 *Included in accessory kit and sealing kit 03.00 | TANDEM KRH3, KRH3-LH | Clamping force block | en | 1527471... -
Page 22: Dynamic Pressure Monitoring Of The Jaw End Positions (Variant "Pm")
Jaw end position open Clamping position Jaw end position closed Connection Jaw end position closed clamping force block open Clamping position Jaw end position open clamping force block closed 03.00 | TANDEM KRH3, KRH3-LH | Clamping force block | en | 1527471... -
Page 23: Air Coupling In Top Jaws (Variant "Pm")
The top jaws can be controlled with compressed air via the pneumatic connections on the bottom. The respective connection assignment can be found in the chapter "Connecting the clamping force block", } 5.2 [/ 20]. Work surface 03.00 | TANDEM KRH3, KRH3-LH | Clamping force block | en | 1527471... - Page 24 In doing so, the transfer dimensions ØC, D, E and F must be observed. Max. pressure 2 bar. Limit volumetric flow to 10 l/min 03.00 | TANDEM KRH3, KRH3-LH | Clamping force block | en | 1527471...
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Page 25: Hydraulic Circuit Diagram
Dynamic pressure monitoring jaw stroke "closed" (2 bar) Air coupling in top jaw 2 (2 bar) Air coupling in top jaw 3 (2 bar) Air coupling in top jaw 1 (2 bar) 03.00 | TANDEM KRH3, KRH3-LH | Clamping force block | en | 1527471... -
Page 26: Maintenance And Care
All seals RENOLIT HLT 2 Sliding surfaces cylinder piston- RENOLIT HLT 2 housing (Product information about microGLEIT LP 410 & RENOLIT HLT 2 can be requested from SCHUNK). 03.00 | TANDEM KRH3, KRH3-LH | Clamping force block | en | 1527471... -
Page 27: Maintenance Work
Only lubricate in the open position. After greasing, run through the complete stroke several times. Grease to be used and lubrication intervals, } 6.3 [/ 26]. Size Grease quantity (strokes per grease nipple) 03.00 | TANDEM KRH3, KRH3-LH | Clamping force block | en | 1527471... - Page 28 Only lubricate in the open position. After greasing, run through the complete stroke several times. Grease to be used and lubrication intervals, [/ 26]. } 6.3 Size Grease quantity (per connection) [cm³] 03.00 | TANDEM KRH3, KRH3-LH | Clamping force block | en | 1527471...
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Page 29: Basic Cleaning
(8). Remove screws (66) and take off the guide strip (6). Variant "PM" also includes a compression spring (27), O-ring (43), sphere (24) and O- ring (42). 03.00 | TANDEM KRH3, KRH3-LH | Clamping force block | en | 1527471... - Page 30 Then pull the chuck piston (3) out of the housing via its extraction thread. Then push the cylinder piston together with the sealing (40) out of the housing. Remove the sealing (41) from the housing. 03.00 | TANDEM KRH3, KRH3-LH | Clamping force block | en | 1527471...
- Page 31 } 6.4.3 [/ 33]. Variant "PM": Pay attention to the correct alignment of the monitoring pieces! Readjust the pneumatic jaw end position control before mounting the guide rails (6). 03.00 | TANDEM KRH3, KRH3-LH | Clamping force block | en | 1527471...
- Page 32 Slowly screw the set-screw (61) into the bore hole oooo until the differential pressure sensor emits a switching signal. Hand-tighten the set-screw (61) in the bore hole ooo. Screw set-screw (63) in both bore holes and hand-tighten. 03.00 | TANDEM KRH3, KRH3-LH | Clamping force block | en | 1527471...
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Page 33: Testing The Leakage And Tightness Of The Hydraulic System
If the clamping system is leaking, check the fittings first. Seal any leaking fittings. Once the fittings are sealed, check the seals in the clamping force block for leaks and replace if necessary, } 9.1 [/ 39]. 03.00 | TANDEM KRH3, KRH3-LH | Clamping force block | en | 1527471... -
Page 34: Assembly Devices Piston Seals
Piston Assembling the piston seal Cone sleeve Expansion sleeve Calibration sleeve Material: Delrin or Nylon Assembly tools for the piston seal 03.00 | TANDEM KRH3, KRH3-LH | Clamping force block | en | 1527471... - Page 35 6 x 60° 99.67 95.67 91.67 6 x 60° C calibration sleeve / Material: steel ±1 KRH3 Piston Ø 43.05 35.05 66.05 58.05 85.5 75.0 120.5 105.05 03.00 | TANDEM KRH3, KRH3-LH | Clamping force block | en | 1527471...
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Page 36: Troubleshooting
Disassemble clamping force block } 6.4.2 [/ 29] replace all the seals (see sealing kit lists } 9.1 [/ 39]) Inadequate lubrication Lubricate the lubrication nipples with microGLEIT LP } 6 [/ 26] 03.00 | TANDEM KRH3, KRH3-LH | Clamping force block | en | 1527471... - Page 37 Pressure change due to clamping stroke Adjust clamping stroke to the workpiece to >0.3 too low mm/jaw Seals damaged Replace seals in cover and adapter plate } 9.1 [/ 39] 03.00 | TANDEM KRH3, KRH3-LH | Clamping force block | en | 1527471...
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Page 38: Storage
Only store the product in dry rooms. Protect the product from major temperature fluctuations. NOTE: Before recommissioning, clean the product and all attachments, check for damage, functionality and leaks. 03.00 | TANDEM KRH3, KRH3-LH | Clamping force block | en | 1527471... -
Page 39: Sealing Kits, Accessory Kits And Parts Lists
* For included items, see note Y in the Parts List chapter below. Seals are wearing parts and are recommended to be replaced during maintenance. The sealing kit can only be ordered as a complete kit. 03.00 | TANDEM KRH3, KRH3-LH | Clamping force block | en | 1527471... -
Page 40: Accessory Kits
Cylindrical pin Turcon Glyd Ring Turcon Glyd Ring O-ring O-ring O-ring O-ring Sealing ring Flat gasket 100 / X Flat gasket 160 / 200 / X O-ring 03.00 | TANDEM KRH3, KRH3-LH | Clamping force block | en | 1527471... - Page 41 Y included in the monitoring sealing kit 225 for size 225 Z included in accessory kit * Individual components are specially tuned to one another and cannot be replaced by the customer. 03.00 | TANDEM KRH3, KRH3-LH | Clamping force block | en | 1527471...
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Page 42: Assembly Drawings
"PM" Centering with fitting screws Centering with clamping sleeves Centering with cylindrical pins (Z variant) Norm screw, if centering with clamping sleeves or cylindrical pins (Z variant) 03.00 | TANDEM KRH3, KRH3-LH | Clamping force block | en | 1527471... -
Page 43: Manufacturer Certificate
VDMA 34192:2019 Safety requirements for clamping devices for use on machines Mengen, 25th of April 2023 p.p. Philipp Schräder p.p. Alexander Koch Head of Development standard products Head of Engineering Design special products 03.00 | TANDEM KRH3, KRH3-LH | Clamping force block | en | 1527471... - Page 44 H.-D. SCHUNK GmbH & Co. Spanntechnik KG Lothringer Str. 23 D-88512 Mengen Tel. +49-7572-7614-0 info@de.schunk.com schunk.com Folgen Sie uns I Follow us Wir drucken nachhaltig I We print sustainable...
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