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  • BOLTTE aluminum triple disc diaphragm coupling, OD 50 x L 70 mm, bore 8-26 mm
  • BOLTTE Aluminum Diaphragm Couplings – Single, Double & Triple Disc — product-only view on a light gray background
  • BOLTTE aluminum single disc diaphragm coupling, OD 19 x L 19 mm, bore 3-8 mm
  • BOLTTE aluminum double disc diaphragm coupling, OD 19 x L 26 mm, bore 3-8 mm
  • BOLTTE aluminum single disc diaphragm coupling, OD 26 x L 26 mm, bore 4-14 mm
  • BOLTTE aluminum double disc diaphragm coupling, OD 26 x L 35 mm, bore 4-14 mm
  • BOLTTE aluminum single disc diaphragm coupling, OD 26 x L 24 mm, bore 4-10 mm
  • BOLTTE aluminum double disc diaphragm coupling, OD 26 x L 30 mm, bore 4-10 mm
  • BOLTTE aluminum single disc diaphragm coupling, OD 32 x L 29 mm, bore 5-16 mm
  • BOLTTE aluminum double disc diaphragm coupling, OD 32 x L 41 mm, bore 5-16 mm
  • BOLTTE aluminum single disc diaphragm coupling, OD 34 x L 32 mm, bore 5-15 mm
  • BOLTTE aluminum double disc diaphragm coupling, OD 34 x L 45 mm, bore 5-15 mm
  • BOLTTE aluminum single disc diaphragm coupling, OD 34 x L 29 mm, bore 5-15 mm
  • BOLTTE aluminum double disc diaphragm coupling, OD 34 x L 38 mm, bore 5-15 mm
  • BOLTTE aluminum single disc diaphragm coupling, OD 39 x L 34 mm, bore 8-19 mm
  • BOLTTE aluminum double disc diaphragm coupling, OD 39 x L 49 mm, bore 8-19 mm
  • BOLTTE aluminum single disc diaphragm coupling, OD 44 x L 35 mm, bore 8-22 mm
  • BOLTTE aluminum double disc diaphragm coupling, OD 44 x L 50 mm, bore 8-22 mm
  • BOLTTE aluminum double disc diaphragm coupling, OD 44 x L 55 mm, bore 8-22 mm
  • BOLTTE aluminum single disc diaphragm coupling, OD 50 x L 41 mm, bore 8-26 mm
  • BOLTTE aluminum double disc diaphragm coupling, OD 50 x L 57 mm, bore 8-26 mm
  • BOLTTE aluminum single disc diaphragm coupling, OD 56 x L 45 mm, bore 10-28 mm
  • BOLTTE aluminum double disc diaphragm coupling, OD 56 x L 63 mm, bore 10-28 mm
  • BOLTTE aluminum single disc diaphragm coupling, OD 68 x L 54 mm, bore 12-35 mm
  • BOLTTE aluminum double disc diaphragm coupling, OD 68 x L 74 mm, bore 12-35 mm
  • BOLTTE aluminum single disc diaphragm coupling, OD 82 x L 68 mm, bore 14-45 mm
  • BOLTTE aluminum double disc diaphragm coupling, OD 82 x L 98 mm, bore 14-45 mm
  • BOLTTE aluminum single disc diaphragm coupling, OD 94 x L 70 mm, bore 15-52 mm
  • BOLTTE aluminum double disc diaphragm coupling, OD 94 x L 100 mm, bore 15-52 mm
  • BOLTTE aluminum triple disc diaphragm coupling, OD 19 x L 34 mm, bore 3-8 mm
  • BOLTTE aluminum triple disc diaphragm coupling, OD 26 x L 44.5 mm, bore 4-11 mm
  • BOLTTE aluminum triple disc diaphragm coupling, OD 32 x L 51 mm, bore 5-16 mm
  • BOLTTE aluminum triple disc diaphragm coupling, OD 34 x L 58 mm, bore 5-15 mm
  • BOLTTE aluminum triple disc diaphragm coupling, OD 39 x L 65 mm, bore 8-19 mm
  • BOLTTE aluminum triple disc diaphragm coupling, OD 44 x L 65 mm, bore 8-22 mm
  • BOLTTE aluminum triple disc diaphragm coupling, OD 56 x L 83 mm, bore 10-28 mm
  • BOLTTE aluminum triple disc diaphragm coupling, OD 68 x L 97 mm, bore 12-35 mm
  • BOLTTE aluminum triple disc diaphragm coupling, OD 82 x L 128 mm, bore 14-45 mm
  • BOLTTE aluminum triple disc diaphragm coupling, OD 94 x L 132 mm, bore 15-52 mm
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BOLTTE Aluminum Diaphragm Couplings – Single, Double & Triple Disc

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BOLTTE Aluminum Diaphragm Couplings – Single, Double & Triple Disc
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BOLTTE Aluminum Diaphragm Couplings

Clamp-style aluminum diaphragm couplings for servo motors, stepper motors, ball screws, encoders and precision motion systems. Choose the disc configuration, outside diameter, overall length and bore range shown in the model selector.

Available Configurations

  • Single-disc, double-disc and triple-disc versions.
  • Outside diameters from 19 to 94 mm.
  • Specified bore ranges from 3 to 52 mm, depending on the selected size.
  • Aluminum alloy hubs with diaphragm elements for precise torque transmission.

Aluminum diaphragm couplings: disc count and envelope

Choose single-, double- or triple-disc construction together with the exact outside diameter, length and bore range. Equal outside diameters can have different lengths and supported bores.

Selection detailWhat to check
Single Disc / OD 19 x L 19 mmOne listed configuration with a 3–8 mm bore range.
Double Disc / OD 19 x L 26 mmA different length and disc arrangement despite the same outside diameter.
Finished boresProvide both shaft-end dimensions, tolerances and any keyway requirements.

Does adding discs establish a higher torque rating?

No rating should be inferred from disc count alone. Confirm the selected model's torque, speed and misalignment limits for the application.

Related selection references

Compare the drawings and intended function; these references are not a statement of direct interchangeability.

Selection Notes

Verify shaft diameter, operating speed, torque, misalignment, mounting space and the selected model dimensions before ordering. Dimensions are in millimetres unless marked otherwise.

Required Order Notes

Please enter the following in the order notes: bore diameter for shaft end A; bore diameter for shaft end B; whether both bores are the same; through-bore or blind-bore requirement; keyway requirement and keyway size; fit or tolerance; operating speed and torque; alignment conditions; and any special machining instructions.

Product Details and Technical Reference

BOLTTE aluminum diaphragm coupling product overview
BOLTTE single double and triple disc diaphragm couplings
BOLTTE diaphragm coupling size range
BOLTTE double disc diaphragm couplings
BOLTTE single disc diaphragm couplings and detail views
BOLTTE diaphragm coupling H7 bore tolerance
BOLTTE diaphragm coupling material and component details
BOLTTE 6061 aluminum diaphragm coupling
BOLTTE precision machined diaphragm couplings
BOLTTE diaphragm coupling keyway machining details
BOLTTE single and double disc diaphragm coupling model chart
BOLTTE triple disc diaphragm coupling model chart and order notes

Modell / konfiguration / SKU

BOLTTE Aluminum Diaphragm Couplings – Single, Double & Triple Disc
Modell / konfigurationSKU
Single Disc / OD 19 x L 19 mm / Bore 3-8 mm BT-DC-S-19X19-B3-8
Double Disc / OD 19 x L 26 mm / Bore 3-8 mm BT-DC-D-19X26-B3-8
Single Disc / OD 26 x L 26 mm / Bore 4-14 mm BT-DC-S-26X26-B4-14
Double Disc / OD 26 x L 35 mm / Bore 4-14 mm BT-DC-D-26X35-B4-14
Single Disc / OD 26 x L 24 mm / Bore 4-10 mm BT-DC-S-26X24-B4-10
Double Disc / OD 26 x L 30 mm / Bore 4-10 mm BT-DC-D-26X30-B4-10
Single Disc / OD 32 x L 29 mm / Bore 5-16 mm BT-DC-S-32X29-B5-16
Double Disc / OD 32 x L 41 mm / Bore 5-16 mm BT-DC-D-32X41-B5-16
Single Disc / OD 34 x L 32 mm / Bore 5-15 mm BT-DC-S-34X32-B5-15
Double Disc / OD 34 x L 45 mm / Bore 5-15 mm BT-DC-D-34X45-B5-15
Single Disc / OD 34 x L 29 mm / Bore 5-15 mm BT-DC-S-34X29-B5-15
Double Disc / OD 34 x L 38 mm / Bore 5-15 mm BT-DC-D-34X38-B5-15
Single Disc / OD 39 x L 34 mm / Bore 8-19 mm BT-DC-S-39X34-B8-19
Double Disc / OD 39 x L 49 mm / Bore 8-19 mm BT-DC-D-39X49-B8-19
Single Disc / OD 44 x L 35 mm / Bore 8-22 mm BT-DC-S-44X35-B8-22
Double Disc / OD 44 x L 50 mm / Bore 8-22 mm BT-DC-D-44X50-B8-22
Double Disc / OD 44 x L 55 mm / Bore 8-22 mm BT-DC-D-44X55-B8-22
Single Disc / OD 50 x L 41 mm / Bore 8-26 mm BT-DC-S-50X41-B8-26
Double Disc / OD 50 x L 57 mm / Bore 8-26 mm BT-DC-D-50X57-B8-26
Single Disc / OD 56 x L 45 mm / Bore 10-28 mm BT-DC-S-56X45-B10-28
Double Disc / OD 56 x L 63 mm / Bore 10-28 mm BT-DC-D-56X63-B10-28
Single Disc / OD 68 x L 54 mm / Bore 12-35 mm BT-DC-S-68X54-B12-35
Double Disc / OD 68 x L 74 mm / Bore 12-35 mm BT-DC-D-68X74-B12-35
Single Disc / OD 82 x L 68 mm / Bore 14-45 mm BT-DC-S-82X68-B14-45
Double Disc / OD 82 x L 98 mm / Bore 14-45 mm BT-DC-D-82X98-B14-45
Single Disc / OD 94 x L 70 mm / Bore 15-52 mm BT-DC-S-94X70-B15-52
Double Disc / OD 94 x L 100 mm / Bore 15-52 mm BT-DC-D-94X100-B15-52
Triple Disc / OD 19 x L 34 mm / Bore 3-8 mm BT-DC-T-19X34-B3-8
Triple Disc / OD 26 x L 44.5 mm / Bore 4-11 mm BT-DC-T-26X44.5-B4-11
Triple Disc / OD 32 x L 51 mm / Bore 5-16 mm BT-DC-T-32X51-B5-16
Triple Disc / OD 34 x L 58 mm / Bore 5-15 mm BT-DC-T-34X58-B5-15
Triple Disc / OD 39 x L 65 mm / Bore 8-19 mm BT-DC-T-39X65-B8-19
Triple Disc / OD 44 x L 65 mm / Bore 8-22 mm BT-DC-T-44X65-B8-22
Triple Disc / OD 50 x L 70 mm / Bore 8-26 mm BT-DC-T-50X70-B8-26
Triple Disc / OD 56 x L 83 mm / Bore 10-28 mm BT-DC-T-56X83-B10-28
Triple Disc / OD 68 x L 97 mm / Bore 12-35 mm BT-DC-T-68X97-B12-35
Triple Disc / OD 82 x L 128 mm / Bore 14-45 mm BT-DC-T-82X128-B14-45
Triple Disc / OD 94 x L 132 mm / Bore 15-52 mm BT-DC-T-94X132-B15-52

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