7237-NI-50-L-MT

Multiple-Joint Hinges GN 7237 Stainless Steel, Internal Mounting, with Opening Angle 180° Metric 3 Type L Fixing angle piece left R Fixing angle piece right Metric table Dimensions in: millimeters - inches 2 l1 d 40    5.3   1.57  .21 h1 h2 h3  7.5  28    2.5    .30  1.10  .10 l2 l3 l4 l5 26    36     70.1  105.2   1.02  1.42   2.76   4.14 50    6.5   1.97  .26 10    35    2.5    .39  1.38  .10 60    8.5   2.36  .33 12.5  40    2.5    .49  1.57  .10 Specification l8 l9 m1 m2 101.9  16    25    5      4.01   .63   .98  .20 r s  78.5  4      3.09  .16 x 13      .51 y 29.5   1.16 35    46     92.3  140    102.8  39.3   1.38  1.81   3.63   5.51   4.05  1.55 134.7  27.8  30      5.30  1.09  1.18 105      4.13 5     .20 18      .71 38     1.50 40    61    116.5  179.5   1.57  2.40   4.59   7.07 172.2  37.2  36    8      6.78  1.46  1.42  .31 137.5  5      5.41  .20 19      .75 47     1.85 1 • Body Stainless steel NI European Standard No. 1.4301 (AISI 304) Matte tumbled finish • Friction bearing Bronze, self-lubricated • RoHS compliant On request 4 MT l6 l7  74.5  27.4    2.93  1.08 125.2  51.3    4.93  2.02 6     .24 Information GN 7237 stainless steel multiple-joint hinges are installed on the inside of flaps, hatches and doors to save space and ensure protection against vandalism. The hinges have a maximum opening angle of 180°, which provides optimal accessibility and avoids the blocking of escape routes by open doors, for example. Use of this hinge type leaves housing exteriors free of attachments that do not match the design or that should be avoided entirely in the interests of fast and easy cleaning. Stainless steel multiple-joint hinges are generally used in pairs, meaning that one Type L and one type R are used per opening. For higher loads, e.g. from large hatches, these can be supplemented with additional hinges of either type. • Other opening angles see also... • Construction Instructions and Load Capacity • Other fixing angle pieces • Spacer Plates GN 2370 (Stainless Steel) • Other materials • Stainless Steel Spacer Plates GN 2372 (Stainless Steel, with Tapped Insert) • Other finishes • Stainless Steel Spacer Plates GN 2376 (with Threaded Studs) • Other max. wall thicknesses • Other lifting motion • With pneumatic spring connection How to order 1 2 3 4 GN 7237-NI-40-L-MT 10 | 3.3 Hinging, Latching, Locking of Doors and Covers 1 Material 2 Length l1 3 Type 4 Finish www.jwwinco.com | phone: 1-800-877-8351 GN 7237 Multiple-Joint Hinges continued Installation position – pivot characteristics The stainless steel multiple-joint hinges can be installed to the housing either with slotted holes on the fixing angle piece that are either perpendicular or parallel to the hinge axis. This results in the two pivot characteristics depicted. Application examples Adjustment and fastening options The stainless steel multiple-joint hinges can be adjusted in three planes during installation. For example, this allows adjustment for tolerances or establishing of required compressive forces for seals. Two planes can be adjusted via parallel or perpendicular slotted holes in the fixing angle pieces. In the third plane, position corrections can be made using the GN 2370 stainless steel spacer plates. GN 2372 stainless steel spacer plates with tapped holes as well as GN 2376 stainless steel spacer plates with threaded studs are also available for fastening the hinges. The latter can be welded on or inserted through the wall from the outside and fastened in place. All accessory items are designed for use with both fixing angle pieces. www.jwwinco.com | phone: 1-800-877-8351 3.3 Hinging, Latching, Locking of Doors and Covers | 11 GN 7237 Multiple-Joint Hinges continued Design variants Flaps, hatches and doors can be inset, surface-mounted or mitered. The maximum wall thicknesses and bend sizes for planned sheet metal constructions arise from the respective installation type. 1. Fixing angle pieces mounted to the housing with slotted holes perpendicular to the hinge axis: l1 s1 max. b1 s 2 max. b 2 max. s 3 max. b 3 max. 40     1.57 13      .51 1 ... ∞ 24      .94 10      .39 10      .39 10      .39 50     1.97 19      .75 1 ... ∞ 34      1.34 17      .67 16      .63 16      .63 60     2.36 25      .98 1 ... ∞ 44      1.73 24      .94 21      .83 21      .83 2. Fixing angle pieces mounted to the housing with slotted holes parallel to the hinge axis: l1 s 4 max. b 4 max. s5 b 5 max. s 6 max. b 6 max. 40     1.57   9      .35 27     1.06 1 ... ∞ 13      .51 10      .39 10      .39 50     1.97 17      .67 35     1.38 1 ... ∞ 19      .75 16      .63 16      .63 60     2.36 23      .91 45     1.77 1 ... ∞ 25      .98 21      .83 21      .83 The design variants shown represent standard installation conditions. If the installation position of the hinge is changed or one of the two wall thickness dimensions s or b are lower, the maximum achievable dimensions change independently of each other. This makes it possible in some cases to work with larger wall thickness dimensions than those specified with the same hinge size. A simple design check via CAD or a test setup is therefore recommended. 12 | 3.3 Hinging, Latching, Locking of Doors and Covers www.jwwinco.com | phone: 1-800-877-8351 GN 7237 Multiple-Joint Hinges continued Construction assembly Load capacity The maximum load of the stainless steel multiple-joint hinges specified below applies to the standard use cases and serves for orientation in the case of deviating applications. The resulting forces lead to slight elastic deformation, which can be compensated for by means of the adjustment options, if necessary. Load capacity per hinge pair l1 40 N 8.99 lbf FA (axial) F R (radial) 125 N 28.10 lbf 450 N 101.16 lbf 50 N 11.24 lbf 125 N 28.10 lbf 600 N 134.89 lbf 60 N 13.49 lbf 125 N 28.10 lbf 450 N 101.16 lbf www.jwwinco.com | phone: 1-800-877-8351 3.3 Hinging, Latching, Locking of Doors and Covers | 13