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
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.
Table of contents
1
Technical data
2
2
Advice
3
2.1
2.2
2.3
2.4
General advice
Safety and advice symbols
General hazard warnings
Intended use
3
3
3
3
Storage, transport and packaging
4
3.1
3.2
4
4
3
4
Storage
Transport and packaging
Assembly
4
4.1
4.2
4.3
4
5
6
Assembly of the damping ring with tank resp. base plate
Assembly of damping ring with bellhousing
Other information
5
Disposal
6
6
Spares inventory, customer service addresses
6
Please observe protection
note ISO 16016.
Drawn:
Verified:
2023-04-04 Pz/Bet
2023-05-09 Pz
Replacing:
Replaced by:
KTR-N dated 2018-10-05
Damping rings
DT, DTV and DTSV
Operating/Assembly instructions
1
KTR-N
Sheet:
Edition:
42410 EN
2 of 6
6
Technical data
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
71
80
90 S
90 L
100 L
112 M
132 S
132 M
160 M
160 L
180 M
180 L
200 L
225 S
225 M
250 M
280 S
280 M
315 S
315 M
355
Dimensions in mm
L
L1
16.5
35
Damping ring
size
DTV 160
D
160
D1
130
D2
111.0
zxG
4 x M8
DT 200
200
165
145.2
4 x M10
20.0
DT 250
250
215
191
4 x M12
DT 300
300
265
235
DT 350
350
300
DT 400
400
DT 450
DT 550
DTV 550
DT 660
DTV 660
DTV 800
z x &Oslash;d
4x9
z x &Oslash;d1
4 x 14.5
l
18
TA
in Nm
12
40
4 x 11
4 x 17.5
20
23
17.5
45
4 x 13
4 x 19.5
22
40
4 x M12
17.5
50
4 x 13
4 x 19
24
40
261
4 x M16
31.0
60
4 x 17
4 x 25
26
100
350
301
4 x M16
31.0
70
4 x 17
4 x 25
31
100
450
400
351
8 x M16
31.0
80
8 x 17
8 x 25
41
100
550
500
451
8 x M16
30.0
68
8 x 17
8 x 25
23
210
660
600
551
8 x M20
30.0
68
8 x 22
8 x 33
23
410
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
100 L/112 M
132 S/M
160 M/L 180 M/L
Damping ring
size
DTSV 250
DTSV 300
D
250
300
D1
215
265
D2
191
235
Dimensions in mm
zxG
L
L1
4 x M12
17.5
45
4 x M12
17.5
50
z x &Oslash;d
4 x 13
4 x 13
z x &Oslash;d1
4 x 19.5
4 x 19.5
l
22
24
TA
in Nm
79
79
DTSV 350
350
300
261
4 x M16
4 x 17
4 x 25
26
195

The damping rings type DTV and DTSV are suitable for vertical installation only.
Please observe protection
note ISO 16016.
Drawn:
Verified:
31.0
2023-04-04 Pz/Bet
2023-05-09 Pz
60
Replacing:
Replaced by:
KTR-N dated 2018-10-05
Damping rings
DT, DTV and DTSV
Operating/Assembly instructions
2
KTR-N
Sheet:
Edition:
42410 EN
3 of 6
6
Advice
2.1 General advice
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.
2.2 Safety and advice symbols
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.
2.3 General hazard warnings
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 &quot;safety first&quot;.
• 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.
2.4 Intended use
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.
Please observe protection
note ISO 16016.
Drawn:
Verified:
2023-04-04 Pz/Bet
2023-05-09 Pz
Replacing:
Replaced by:
KTR-N dated 2018-10-05
Damping rings
DT, DTV and DTSV
Operating/Assembly instructions
3
KTR-N
Sheet:
Edition:
42410 EN
4 of 6
6
Storage, transport and packaging
3.1 Storage
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 &deg;C.
3.2 Transport and packaging
!
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.
4
Assembly
The damping ring is generally supplied ready for assembly.
4.1 Assembly of the damping ring with tank resp. base plate
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).
Please observe protection
note ISO 16016.
Drawn:
Verified:
2023-04-04 Pz/Bet
2023-05-09 Pz
Replacing:
Replaced by:
KTR-N dated 2018-10-05
Damping rings
DT, DTV and DTSV
Operating/Assembly instructions
4
KTR-N
Sheet:
Edition:
42410 EN
5 of 6
6
Assembly
4.1 Assembly of the damping ring with tank resp. base plate
Damping ring type DT.../2 (see illustration 2)
• The damping ring DT.../2 is fitted on the hole in the tank
resp. base plate.
• Push the screws through the counterbores in the damping
ring and screw them to the threads in the tank or base
plate (see illustration 4).
• The screw lengths must be selected such that the
complete length of the thread in the tank or base plate is
utilised, if possible. For tightening torques TA see table 1
or 2.
Illustration 4: Assembly of damping ring type DT.../2

Secure the screw connection additionally against working loose, e. g. conglutinating with
Loctite (average strength).

The damping ring DT…/2 is not suitable for lateral installation of tank, since sealing is not
assured.
4.2 Assembly of damping ring with bellhousing
• The bellhousing is pushed through the damping ring DT
up to the contact surface.
• Push the screws through the bores in the collar of the
bellhousing and screw them to the threads in the damping
ring DT (see illustration 5).
• 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 5: Assembly of damping ring type DT
with bellhousing

Secure the screw connection additionally against working loose, e. g. conglutinating with
Loctite (average strength).
Please observe protection
note ISO 16016.
Drawn:
Verified:
2023-04-04 Pz/Bet
2023-05-09 Pz
Replacing:
Replaced by:
KTR-N dated 2018-10-05
Damping rings
DT, DTV and DTSV
Operating/Assembly instructions
4
KTR-N
Sheet:
Edition:
42410 EN
6 of 6
6
Assembly
4.3 Other information
• The damping ring DT can be used both horizontally and vertically (only standard IEC motors).
• The damping ring DTV is intended for vertical use only (only standard IEC motors).
• The damping ring DTSV is intended for vertical use only.
• Sealing lips are moulded on the damping rings DT so that additional gaskets between bellhousing and tank
can be done without. The sealing lips must be inspected for potential damages before assembly.
Please observe the following KTR operating/assembly instructions:
• Bellhousing Operating/Assembly instructions ➔
5
KTR-N 41010
Disposal
In respect of environmental protection we would ask you to dispose of the packaging resp. products on
termination of their service life in accordance with the legal regulations resp. standards that apply.
6
Spares inventory, customer service addresses
A basic requirement to ensure the readiness for use of the damping ring is a stock of the most important spare
parts on site.
Contact addresses of the KTR partners for spare parts and orders can be obtained from the KTR homepage at
www.ktr.com.

KTR does not assume any liability or warranty for the use of spare parts and accessories
which are not provided by KTR and for the damages which may incur as a result.
KTR Systems GmbH
Carl-Zeiss-Str. 25
D-48432 Rheine
Phone: +49 5971 798-0
E-mail: [email protected]
Please observe protection
note ISO 16016.
Drawn:
Verified:
2023-04-04 Pz/Bet
2023-05-09 Pz
Replacing:
Replaced by:
KTR-N dated 2018-10-05
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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

Frequently asked questions

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.

These damping rings are compatible with standard IEC motors and servo motors, with specific size options available for each type.

The damping ring DT can be used both horizontally and vertically, while the damping rings DTV and DTSV are intended for vertical use only.

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.

No, the damping rings DT have moulded-in sealing lips that eliminate the need for additional gaskets.