Back check TB series

Non-adjustable model

Characteristics

  • Dampens doors when opening speed is too high
  • With fixed damping force
  • Optionally available with integrated mechanical hold-open
  • Can be used in combination with an overhead door closer
  • The opening angle at which the damping starts can be adjusted by reducing the oil filling quantity

Models and accessories

  • Selection criteria: Depending on door weight, opening angle and installation situation, different models are available in two series with different diameters (10-23 and 14-28). Details can be found under the ‘Selection criteria’ tab.
  • Components included: By default, back checks are always supplied with an eyelet, both on piston rod and cylinder
  • Accessories-sets: Information on the various accessories-sets can be found under the ‘Standard-sets’ tab
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Product information

Materialpiston rod hard chromed; piston rod AISI 304; piston rod AISI 316; cylinder zinc-plated steel; cylinder varnished in RAL-colours; cylinder AISI 304; cylinder AISI 316
Door weightmax. 200 kg
Opening anglemax. 120°, see information on the different types
Additional optionshold-open

Back checks are esentially defined by the diameter of the piston K, of the cylinder Z, the stroke (= Hub) and their total length La (= Gesamtlänge La).

020402-Türöffnungsbegrenzer-TB-Masse

The following table shows the available standard types and indicates the door weight and the opening angle up to which the respective back check may be used.

TB Selection criteria
Series 10-23: ø K: 10, ø Z: 23 (mm)Part no.
Stroke (mm)Length (mm)Door weight
(kg)
Opening angleStopZinc-plated steelAISI 304AISI 316
2005005095ºno302000302002302004
2005005095ºyes302001--
2005105095ºyes-302003302005
25060050120ºno302006302010302012
25060050120ºyes302007--
25061050120ºyes-302011302013
25066050120ºno302008*--
25066050120ºyes302009*--
Series 14-28: ø K: 14, ø Z: 28 (mm)Part no.
Stroke (mm)Length (mm)Door weight
(kg)
Opening angleStopZinc-plated steelAISI 304AISI 316
2005009095ºno302014--
2005109095ºno-302016302018
2005109095ºyes302015302017302019
250600200120ºno302020302022302024
250610200120ºyes302021302023302025
300750200120ºno302026302028302030
300750200120ºyes302027302029302031
4001000200120ºno302033302035302037
4001000200120ºyes302034302036302038

* Back checks 302008 and 302009 are longer than the other standard types. They are specifically intended for installation together with a guide rail door closer.

Of course we also produce other dimensions if none of the mentioned standard types suits your application. Our technical advisory service will be glad to assist you in choosing and determining the mounting positions.

Use in combination with overhead door closer

If the back check TB is used in conjunction with a guide rail overhead door closer, care must be taken to ensure that the overall dimension of the TB is slightly longer than the rail. In many cases, the standard version of rail door closer is sufficient. But together with an overhead door closers you should always use the brackets designed especially for this purpose, as they place the back check a little lower than usual (see Mounting Accessories, part no. 205276).

You’ll find information on our standard sets in the two tables below. They include a back check and the appropriate fixing accessories. For detailled information about the fixing accessories, see Installation accessories for back checks.

Zinc-plated steel

ø Kø ZStrokeLengthAccessories SetPart no. without hold-openPart no. with hold open
10232506001300981300991
10232506002300982300992
10232506003300983300993
14282506001300984-
14282506101-300994
14282506002300985-
14282506102-300995
14282506003300986-
14282506103-300996

Stainless steel

ø Kø ZStrokeLengthAccessories SetPart no. without hold-openPart no. with hold-open
14282506001300987-
14282506101-300998
14282506002300990-
14282506102-300997
14282506003301901-
14282506103-301902

Every back check can be furnished with the corresponding fixing accessories. For back checks in AISI 316 not all mounting brackets are available. Should you have any questions, just contact us.

General installation instructions

When installing the back check, it is essential to ensure that they are firmly and securely fastened to the door and frame, as very high forces can occur here. If the door or frame is made of thin-walled steel or similar, we recommend the use of mounting plates.

It must be also ensured that the piston rod is not completely retracted when the door is closed. It should still protrude 10 mm from the cylinder so that the door can be opened without any problem.

Back check with integrated stop: When determining the correct mounting position, it should be taken into account that the locking position is approximately 3º before the complete opening, i.e. before the piston rod is completely extended.


Standard fixing sets 1 – 3 for Series 10-23, 14-28 and 10-28 with 8mm diameter eyelet boring

Fixing set 1

  • For flush and overlapping doors
  • Following components included:
    – Mounting bracket: part no. 205197 (zinc-plated), 205249 (AISI 304) or 205455 (AISI 316)
    – Mounting bracket TB 40x40x40, mounting pin Ø 8 mm, part no. 205262 (zinc-plated), 205282 (AISI 304) or 205456 (AISI 316)

Case a: Used for fitting on the back of the door (door type 1a with normal frame width) or on the front side of overlapping doors (door type 1b)

Case b: Used for fitting on the back of the door (door type 1c with narrow frame) or on the front side of flush doors (door type 1d)

Fixing set 2

  • Used exclusively for fitting on the back of the door under the condition that there is enough space for fixing the mounting flange, part no. 205261.
  • Following components included:
    – Mounting bracket, part no. 205197 (zinc-plated), 205249 (AISI 304) or 205455 (AISI 316)
    – Mounting flange TB Ø 42, mounting pin Ø 8 mm, part no. 205261 (zinc-plated) or 205281 (AISI 304)

Türöffnungsbegrenzer Befestigungszubehör Montage 3

Fixing set 3

  • Intended for doors with a narrow frame or rebate
  • Following components included:
    – Mounting bracket, part no. 205197 (zinc-plated), 205249 (AISI 304) or 205455 (AISI 316)
    – Mounting bracket TB 50x40x20, mounting pin Ø 8 mm, part no. 205263 (zinc-plated) or 205225 (AISI 304)

Case a: Used for fitting on the back of doors with a narrow frame (door type 3a)
Case b: Used for fitting on the front side of doors with a narrow rebate (door type 3b)

Türöffnungsbegrenzer Befestigungszubehör Montage 4


Fitting on thin-walled steel doors

Should mounting bracket no. 205197 be fitted on thin-walled doors, the counter plate, part no. 205468 has to be fixed on the opposite side of the door.


Installation situations with an overhead door closer

Overhead door closer (OTS), installed on the door frame

Türöffnungsbegrenzer Montage mit ObentürschließerFor back checks with an inner diameter of the eyelet C = 8 mm (see table under ‘Dimensions’ in the Dimensions of the Eyelet)

On thin-walled steel doors the mounting bracket no. 205197 should be fixed with aid of counter plate no. 205468.

Some of the fixing accessories are also available in AISI 304 and AISI 316. Please see ‘Order information’ below.

Overhead door closer (OTS), installed on the door frame

Türöffnungsbegrenzer Montage Obentürschließer 2 2017For back checks with an inner diameter of the eyelet C = 10 mm (see table under ‘Dimensions’ in the Dimensions of the Eyelet)

Depending on the door and the occuring loads, in addition to the mounting plate no. 205460, counter plate no. 205461 is also used.

Some of the fixing accessories are also available in AISI 304 and AISI 316. Please see ‘Order Information’below.

Overhead door closer (OTS), installed on the door leaf

The illustration shows the installation situation with an overhead door closer on a right door, installed on the non swing side.

Some of the fixing accessories are also available in AISI 304 and AISI 316. Please see ‘Order Information’ below.

Overhead door closer with slide channel OTS-GS/SFR with door sequence selection, installed on the door leaf

The illustration shows the installation situation with an overhead door closer on a right door, installed on the non swing side.

Some of the fixing accessories are also available in AISI 304 and AISI 316. Please see ‘Order Information’ below.


Under Installation accessories you can find the different installation possibilities and the recommended fixing brackets.

On non-adjustable TB back checks the damping range can be reduced on site (i.e. the damping before reaching the open position starts later!). For this purpose, you can withdraw some of the back check’s oil through the valve screw.

ATTENTION: Before any modifications please always contact our technical customer service. If you drain too much oil, it will not be possible to correct this on site and the back check would have to be returned to the factory. With too little oil left, it could also be possible that the damping is no longer enough to prevent the door from slamming open.

File NameTypeDate of modification
DICTATOR Back Checkspdf2019/08/09
Questionnaire Back Checkspdf2020/02/05
Folder DICTATOR Back Checkspdf2011/06/23
Selection Criteria Back Checkspdf2018/07/03
DWG Mounting Bracket TB, 205462-Wdwg2018/04/17
DWG Mounting Plate TB, 205479dwg2018/04/17
DWG Mounting Bracket TB, 205489dwg2018/04/17
DWG Mounting Plate TB, 205503dwg2018/04/17
DWG Mounting Bracket TB-OTS, 205507dwg2018/04/17
STEP Mounting Bracket TB-OTS, 205507stp2018/04/17
STEP Mounting Bracket TB-OTS, 205508stp2018/04/17
DWG Mounting flange TB, 205261dwg2018/07/02
DWG Mounting bracket TB, 205262dwg2018/07/02
STEP Mounting bracket TB, 205262stp2018/07/02
DWG Mounting bracket TB, 205263dwg2018/07/02
STEP Mounting bracket TB, 205263stp2018/07/02
DWG Mounting bracket TB-OTS, 205276dwg2018/07/02
STEP Mounting bracket TB-OTS, 205276stp2018/07/02
DWG Mounting plate TB, 205460dwg2018/07/02
STEP Mounting plate TB, 205460stp2018/07/02
DWG Counter plate TB, 205461dwg2018/07/02
STEP Counter plate TB, 205461stp2018/07/02
DWG Counter plate TB, 205468dwg2018/07/02
STEP Counter plate TB, 205468stp2018/07/02
DWG Mounting flange TB, 205469dwg2018/07/02
STEP Mounting flange TB, 205469stp2018/07/02
DWG Mounting bracket TB-OTS, 205476dwg2018/07/02
STEP Mounting bracket TB-OTS, 205476stp2018/07/02
DWG Mounting pin TB 25-14, 205511dwg2018/07/02
STEP Mounting pin TB 25-14, 205511stp2018/07/02
DWG Mounting pin TB 45-14, 205514dwg2018/07/02
STEP Mounting pin TB 45-14, 205514stp2018/07/02
DWG Mounting pin TB 25-16, 205517dwg2018/07/02
STEP Mounting pin TB 25-16, 205517stp2018/07/02
DWG Mounting pin TB 45-16, 205520dwg2018/07/02
STEP Mounting pin TB 45-16, 205520stp2018/07/02
STEP Mounting plate TB for bracket, 205479stp2018/11/05
STEP Mounting flange TB Ø 42 mm, 205261stp2018/11/05
STEP Mounting Bracket TB, 205489stp2019/09/19
DWG Mounting bracket, 205197dwg2019/09/19
STEP Mounting bracket, 205197stp2019/09/19

Order Information

DescriptionPart No.
Back check 14-28-400-1/Öl-600-1000-A-A, with mechanical stop, AISI 316L / 316TI stainless steel302038
Back check 14-28-400-1/Öl-600-1000-A-A, with mechanical stop, AISI 304 stainless steel302036
Back check 14-28-400-1/Öl-600-1000-A-A, with mechanical stop, zinc-plated302034
Back check 14-28-400-1/Öl-600-1000-A-A, AISI 316L / 316TI stainless steel302037
Back check 14-28-400-1/Öl-600-1000-A-A, AISI 304 stainless steel 302035
Back check 14-28-400-1/Öl-600-1000-A-A, zinc-plated302033
Back check 14-28-300-1/Öl-450-750-A-A, with mechanical stop, AISI 316L / 316TI stainless steel302031
Back check 14-28-300-1/Öl-450-750-A-A, with mechanical stop, AISI 304 stainless steel302029
Back check 14-28-300-1/Öl-450-750-A-A, with mechanical stop, zinc-plated302027
Back check 14-28-300-1/Öl-450-750-A-A, AISI 316L / 316TI stainless steel302030
Back check 14-28-300-1/Öl-450-750-A-A, AISI 304 stainless steel302028
Back check 14-28-300-1/Öl-450-750-A-A, zinc-plated302026
Back check 14-28-250-1/Öl-360-610-A-A, with mechanical stop, AISI 316L / 316TI stainless steel302025
Back check 14-28-250-1/Öl-360-610-A-A, with mechanical stop, AISI 304 stainless steel302023
Back check 14-28-250-1/Öl-360-610-A-A, with mechanical stop, zinc-plated302021
Back check 14-28-250-1/Öl-350-600-A-A, AISI 316L / 316TI stainless steel302024
Back check 14-28-250-1/Öl-350-600-A-A, AISI 304 stainless steel302022
Back check 14-28-250-1/Öl-350-600-A-A, zinc-plated302020
Back check 14-28-200-1/Öl-310-510-A-A, with mechanical stop, AISI 316L / 316TI stainless steel302019
Back check 14-28-200-1/Öl-310-510-A-A, with mechanical stop, AISI 304 stainless steel 302017
Back check 14-28-200-1/Öl-310-510-A-A, with mechanical stop, zinc-plated302015
Back check 14-28-200-1/Öl-310-510-A-A, AISI 316L / 316TIL stainless steel302018
Back check 14-28-200-1/Öl-310-510-A-A, AISI 304 stainless steel302016
Back check 14-28-200-1/Öl-300-500-A-A, zinc-plated302014
Back check 10-23-250-1/Öl-410-660-A-A, with mechanical stop, zinc-plated302009
Back check 10-23-250-1/Öl-410-660-A-A, zinc-plated302008