KTR Damping rings DT, DTV and DTSV Operating/Mounting Instructions
KTR Damping rings DT, DTV and DTSV are designed to isolate structure-borne noise between drive units and tank covers or baseplates. They are available in various sizes for standard IEC motors and servo motors, allowing for efficient noise reduction in a wide range of applications. These damping rings are suitable for both horizontal and vertical installations, depending on the specific model. The installation process is straightforward and detailed in the operating/assembly instructions.
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Damping rings
DT, DTV and DTSV
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
42410 EN
1 of 6
6
Please observe protection
note ISO 16016.
Drawn: 2023-04-04 Pz/Bet Replacing: KTR-N dated 2018-10-05
Verified: 2023-05-09 Pz Replaced by:
Damping rings
DT, DTV and DTSV
The damping ring DT serves for structure-borne noise separation between the drive units
(motor-bellhousing-pump) and tank cover respectively base plate.
1 Technical data 2
2 Advice 3
2.1 General advice 3
2.2 Safety and advice symbols 3
2.3 General hazard warnings 3
2.4 Intended use 3
3 Storage, transport and packaging 4
3.1 Storage 4
3.2 Transport and packaging 4
4 Assembly 4
4.1 Assembly of the damping ring with tank resp. base plate 4
4.2 Assembly of damping ring with bellhousing 5
4.3 Other information 6
5 Disposal 6
6 Spares inventory, customer service addresses 6
Table of contents
DT, DTV and DTSV
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
42410 EN
1 of 6
6
Please observe protection
note ISO 16016.
Drawn: 2023-04-04 Pz/Bet Replacing: KTR-N dated 2018-10-05
Verified: 2023-05-09 Pz Replaced by:
Damping rings
DT, DTV and DTSV
The damping ring DT serves for structure-borne noise separation between the drive units
(motor-bellhousing-pump) and tank cover respectively base plate.
1 Technical data 2
2 Advice 3
2.1 General advice 3
2.2 Safety and advice symbols 3
2.3 General hazard warnings 3
2.4 Intended use 3
3 Storage, transport and packaging 4
3.1 Storage 4
3.2 Transport and packaging 4
4 Assembly 4
4.1 Assembly of the damping ring with tank resp. base plate 4
4.2 Assembly of damping ring with bellhousing 5
4.3 Other information 6
5 Disposal 6
6 Spares inventory, customer service addresses 6
Table of contents
Damping rings
DT, DTV and DTSV
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
42410 EN
2 of 6
6
Please observe protection
note ISO 16016.
Drawn: 2023-04-04 Pz/Bet Replacing: KTR-N dated 2018-10-05
Verified: 2023-05-09 Pz Replaced by:
Illustration 1: Damping ring DT Illustration 2: Damping ring type DT.../2
(not suitable for lateral installation of tank)
Table 1: Dimensions for damping rings type DT and DTV for applications with standard IEC motors
IEC motor
size
Damping ring
size
Dimensions in mm TA
in NmD D1 D2 z x G L L1 z x Ød z x Ød1 l
71 DTV 160 160 130 111.0 4 x M8 16.5 35 4 x 9 4 x 14.5 18 12
80
DT 200 200 165 145.2 4 x M10 20.0 40 4 x 11 4 x 17.5 20 2390 S
90 L
100 L DT 250 250 215 191 4 x M12 17.5 45 4 x 13 4 x 19.5 22 40
112 M
132 S DT 300 300 265 235 4 x M12 17.5 50 4 x 13 4 x 19 24 40
132 M
160 M
DT 350 350 300 261 4 x M16 31.0 60 4 x 17 4 x 25 26 100
160 L
180 M
180 L
200 L DT 400 400 350 301 4 x M16 31.0 70 4 x 17 4 x 25 31 100
225 S DT 450 450 400 351 8 x M16 31.0 80 8 x 17 8 x 25 41 100
225 M
250 M DT 550
DTV 550 550 500 451 8 x M16 30.0 68 8 x 17 8 x 25 23 210280 S
280 M
315 S DT 660
DTV 660 660 600 551 8 x M20 30.0 68 8 x 22 8 x 33 23 410
315 M
355 DTV 800 800 740 683 8 x M20 25.0 71 - - - 410
Table 2: Dimensions for damping ring type DTSV for applications with servo motors
IEC motor
size
Damping ring
size
Dimensions in mm TA
in NmD D1 D2 z x G L L1 z x Ød z x Ød1 l
100 L/112 M DTSV 250 250 215 191 4 x M12 17.5 45 4 x 13 4 x 19.5 22 79
132 S/M DTSV 300 300 265 235 4 x M12 17.5 50 4 x 13 4 x 19.5 24 79
160 M/L -
180 M/L DTSV 350 350 300 261 4 x M16 31.0 60 4 x 17 4 x 25 26 195
The damping rings type DTV and DTSV are suitable for vertical installation only.
1 Technical data
DT, DTV and DTSV
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
42410 EN
2 of 6
6
Please observe protection
note ISO 16016.
Drawn: 2023-04-04 Pz/Bet Replacing: KTR-N dated 2018-10-05
Verified: 2023-05-09 Pz Replaced by:
Illustration 1: Damping ring DT Illustration 2: Damping ring type DT.../2
(not suitable for lateral installation of tank)
Table 1: Dimensions for damping rings type DT and DTV for applications with standard IEC motors
IEC motor
size
Damping ring
size
Dimensions in mm TA
in NmD D1 D2 z x G L L1 z x Ød z x Ød1 l
71 DTV 160 160 130 111.0 4 x M8 16.5 35 4 x 9 4 x 14.5 18 12
80
DT 200 200 165 145.2 4 x M10 20.0 40 4 x 11 4 x 17.5 20 2390 S
90 L
100 L DT 250 250 215 191 4 x M12 17.5 45 4 x 13 4 x 19.5 22 40
112 M
132 S DT 300 300 265 235 4 x M12 17.5 50 4 x 13 4 x 19 24 40
132 M
160 M
DT 350 350 300 261 4 x M16 31.0 60 4 x 17 4 x 25 26 100
160 L
180 M
180 L
200 L DT 400 400 350 301 4 x M16 31.0 70 4 x 17 4 x 25 31 100
225 S DT 450 450 400 351 8 x M16 31.0 80 8 x 17 8 x 25 41 100
225 M
250 M DT 550
DTV 550 550 500 451 8 x M16 30.0 68 8 x 17 8 x 25 23 210280 S
280 M
315 S DT 660
DTV 660 660 600 551 8 x M20 30.0 68 8 x 22 8 x 33 23 410
315 M
355 DTV 800 800 740 683 8 x M20 25.0 71 - - - 410
Table 2: Dimensions for damping ring type DTSV for applications with servo motors
IEC motor
size
Damping ring
size
Dimensions in mm TA
in NmD D1 D2 z x G L L1 z x Ød z x Ød1 l
100 L/112 M DTSV 250 250 215 191 4 x M12 17.5 45 4 x 13 4 x 19.5 22 79
132 S/M DTSV 300 300 265 235 4 x M12 17.5 50 4 x 13 4 x 19.5 24 79
160 M/L -
180 M/L DTSV 350 350 300 261 4 x M16 31.0 60 4 x 17 4 x 25 26 195
The damping rings type DTV and DTSV are suitable for vertical installation only.
1 Technical data
Damping rings
DT, DTV and DTSV
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
42410 EN
3 of 6
6
Please observe protection
note ISO 16016.
Drawn: 2023-04-04 Pz/Bet Replacing: KTR-N dated 2018-10-05
Verified: 2023-05-09 Pz Replaced by:
Read carefully through these operating/assembly instructions before you start up the damping ring.
Pay special attention to the safety instructions!
The operating/assembly instructions are part of your product. Please store them carefully and close to the
damping ring. The copyright for these operating/assembly instructions remains with KTR.STOP
Warning of personal injury
This symbol indicates notes which may contribute to
preventing bodily injuries or serious bodily injuries that
may result in death.!
Warning of product damages This symbol indicates notes which may contribute to
preventing material or machine damage.
General advice This symbol indicates notes which may contribute to
preventing adverse results or conditions.STOP
With assembly and maintenance of the damping ring it has to be made sure that the entire
drive train is secured against accidental switch-on and the plant is unpressurized. Improper
treatment of the damping ring and rotating parts may cause serious injuries. Make
absolutely sure to read through and observe the following safety indications.
• All operations on and with the damping ring have to be performed taking into account "safety first".
• Secure the power pack against accidental switch-on, e. g. by providing warning signs at the place of switch-on
or removing the fuse for current supply.
• Do not reach into the operation area of the machine as long as it is in operation.
• Secure the rotating drive components against accidental contact. Provide for the necessary protection devices
and covers.
You may only assemble and maintain the damping ring if you
• have carefully read through the operating/assembly instructions and understood them
• are technically qualified and specifically trained (e. g. safety, environment, logistics)
• are authorized by your company
The damping ring may only be used in accordance with the technical data (see chapter 1). Unauthorized
structural modifications on the damping ring are not admissible. We will not assume liability for any damage that
may arise. In the interest of further development we reserve the right for technical modifications.
The damping ring described in here corresponds to the technical status at the time of printing of these
operating/assembly instructions.
2 Advice
2.1 General advice
2.2 Safety and advice symbols
2.3 General hazard warnings
2.4 Intended use
DT, DTV and DTSV
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
42410 EN
3 of 6
6
Please observe protection
note ISO 16016.
Drawn: 2023-04-04 Pz/Bet Replacing: KTR-N dated 2018-10-05
Verified: 2023-05-09 Pz Replaced by:
Read carefully through these operating/assembly instructions before you start up the damping ring.
Pay special attention to the safety instructions!
The operating/assembly instructions are part of your product. Please store them carefully and close to the
damping ring. The copyright for these operating/assembly instructions remains with KTR.STOP
Warning of personal injury
This symbol indicates notes which may contribute to
preventing bodily injuries or serious bodily injuries that
may result in death.!
Warning of product damages This symbol indicates notes which may contribute to
preventing material or machine damage.
General advice This symbol indicates notes which may contribute to
preventing adverse results or conditions.STOP
With assembly and maintenance of the damping ring it has to be made sure that the entire
drive train is secured against accidental switch-on and the plant is unpressurized. Improper
treatment of the damping ring and rotating parts may cause serious injuries. Make
absolutely sure to read through and observe the following safety indications.
• All operations on and with the damping ring have to be performed taking into account "safety first".
• Secure the power pack against accidental switch-on, e. g. by providing warning signs at the place of switch-on
or removing the fuse for current supply.
• Do not reach into the operation area of the machine as long as it is in operation.
• Secure the rotating drive components against accidental contact. Provide for the necessary protection devices
and covers.
You may only assemble and maintain the damping ring if you
• have carefully read through the operating/assembly instructions and understood them
• are technically qualified and specifically trained (e. g. safety, environment, logistics)
• are authorized by your company
The damping ring may only be used in accordance with the technical data (see chapter 1). Unauthorized
structural modifications on the damping ring are not admissible. We will not assume liability for any damage that
may arise. In the interest of further development we reserve the right for technical modifications.
The damping ring described in here corresponds to the technical status at the time of printing of these
operating/assembly instructions.
2 Advice
2.1 General advice
2.2 Safety and advice symbols
2.3 General hazard warnings
2.4 Intended use
Damping rings
DT, DTV and DTSV
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
42410 EN
4 of 6
6
Please observe protection
note ISO 16016.
Drawn: 2023-04-04 Pz/Bet Replacing: KTR-N dated 2018-10-05
Verified: 2023-05-09 Pz Replaced by:
The features of the damping rings remain unchanged for up to 5 years with favourable storage conditions.
The damping rings have to be protected against solar radiation or UV radiation.
The temperature of the bearing should not exceed +30 °C.!
In order to avoid any injuries and any kind of damage always make use of proper transport
and lifting equipment.
The damping rings are packed differently each depending on size, number and kind of transport, only dry
packaging material should be used. Unless otherwise contractually agreed, packaging will follow the in-house
packaging specifications of KTR.
The damping ring is generally supplied ready for assembly.
Damping ring type DT (see illustration 1)
• The damping ring DT is fitted on the hole in the tank resp.
base plate.
• Push the screws through the tank resp. base plate and
screw them to the threads in the damping ring DT (see
illustration 3).
• The screw lengths must be selected such that the
complete length of the thread in the damping ring DT is
utilised, if possible. For tightening torques TA see table 1. Illustration 3: Assembly of damping ring DT
Secure the screw connection additionally against working loose, e. g. conglutinating with
Loctite (average strength).
3 Storage, transport and packaging
3.1 Storage
3.2 Transport and packaging
4 Assembly
4.1 Assembly of the damping ring with tank resp. base plate
DT, DTV and DTSV
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
42410 EN
4 of 6
6
Please observe protection
note ISO 16016.
Drawn: 2023-04-04 Pz/Bet Replacing: KTR-N dated 2018-10-05
Verified: 2023-05-09 Pz Replaced by:
The features of the damping rings remain unchanged for up to 5 years with favourable storage conditions.
The damping rings have to be protected against solar radiation or UV radiation.
The temperature of the bearing should not exceed +30 °C.!
In order to avoid any injuries and any kind of damage always make use of proper transport
and lifting equipment.
The damping rings are packed differently each depending on size, number and kind of transport, only dry
packaging material should be used. Unless otherwise contractually agreed, packaging will follow the in-house
packaging specifications of KTR.
The damping ring is generally supplied ready for assembly.
Damping ring type DT (see illustration 1)
• The damping ring DT is fitted on the hole in the tank resp.
base plate.
• Push the screws through the tank resp. base plate and
screw them to the threads in the damping ring DT (see
illustration 3).
• The screw lengths must be selected such that the
complete length of the thread in the damping ring DT is
utilised, if possible. For tightening torques TA see table 1. Illustration 3: Assembly of damping ring DT
Secure the screw connection additionally against working loose, e. g. conglutinating with
Loctite (average strength).
3 Storage, transport and packaging
3.1 Storage
3.2 Transport and packaging
4 Assembly
4.1 Assembly of the damping ring with tank resp. base plate
5
6
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Key Features
- Structure-borne noise isolation
- Standard IEC and servo motor compatibility
- Horizontal and vertical installation options
- Various sizes
- Easy assembly
- Detailed instructions
Related manuals
Frequently Answers and Questions
What is the purpose of the damping rings?
Damping rings DT, DTV, and DTSV are used to separate structure-borne noise between drive units (motor-bellhousing-pump) and the tank cover or base plate.
What types of motors are these damping rings compatible with?
These damping rings are compatible with standard IEC motors and servo motors, with specific size options available for each type.
Can I install these damping rings vertically or horizontally?
The damping ring DT can be used both horizontally and vertically, while the damping rings DTV and DTSV are intended for vertical use only.
How do I assemble the damping ring with the tank or base plate?
Detailed instructions are provided for assembling the damping ring with the tank or base plate, depending on the specific type, including screw sizes and tightening torques.
Are gaskets required between the bellhousing and tank?
No, the damping rings DT have moulded-in sealing lips that eliminate the need for additional gaskets.
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