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Multiple Disc Mechanical Torque Limiters (TL1, TL2 & TL3) Specifications

Advantages

  • Sustains torque level
  • Durable
  • High torque in a small size
  • Predictable dynamic and static torque
  • Easily adjustable over a wide range
  • Superior adjustment retention
  • Designed for easy rebuilt with no special tools required
  • Steel-on-bronze friction discs provide longer life than fiber discs

Operation

  • Torque range 1 lb. ft.- 2000 lb. ft.
  • Can be pre-set to transmit torque constantly regardless of the speed of the drive mechanism
  • Adjusting nut on end of hub regulates spring pressure against multiple steel-on-bronze friction disc assembly
Torque Limiter Digram

Specifications / Dimensions

TL1 Torque Limiter Clutch / Brake Chart A
Model Torque Adj. Range (lb. ft.) Std. Bores (+.001) Std. Bores (-.001) Keyway
A
B
C
Q
TL1-0020 0-10 1/2 5/8 1/8 x 1/16 1.250 2.188 1.438 0.188
TL1-0021 10-25 3/4 7/8 3/16 x 3/32 1.625 2.188 1.250 0.125
TL1-0022 25-50 1 1 1/8 3/16 x 3/32 2.125 2.625 1.594 0.125
TL1-0023 50-100 1 1/4 1 3/8 1/4 x 1/8 2.125 3.500 1.063 0.188
TL1-0024 100-175 1 1/2 1 5/8 5/16 x 5/32 2.125 4.000 2.344 0.188
TL1-0025 175-300 1 3/4 1 7/8 3/8 x 3/16 2.750 4.500 2.688 0.188
TL1-0026 300-500 2 2 1/4 7/16 x 7/32 3.250 5.500 3.250 0.188
TL1-0027 500-1000 2 1/2 2 3/4 9/16 x 9/32 4.000 7.000 5.125 0.063
TL1-0028 1000-1500 2 3/4 3 9/16 x 9/32 4.625 8.000 5.500 0.000

TL1 Torque Limiter Clutch / Brake Chart B
Model Driving Lugs
GM		 Driving Lug Width
GM
SM
VM		 Cup I.D. Cup O.D. Cup Screws Bolt Circle
TL1-0020 3 .615 1.984 2.188 2.017 - 2.015 3.125 - 3.123 3 1/4 x 2 9/16
TL1-0021 3 .615 1.984 2.188 2.017 - 2.015 3.125 - 2.123 3 1/4 x 2 9/16
TL1-0022 3 .740 2.484 2.750 2.517 - 2.515 3.625 - 3.623 3 1/4 x 3 1/16
TL1-0023 3 .990 3.234 3.563 3.627 - 3.625 4.625 - 4.623 3 5/16 x 4 7/16
TL1-0024 3 .990 3.734 4.063 3.767 - 3.765 5.125 - 5.123 3 5/16 x 4 7/16
TL1-0025 8 .740 4.484 4.875 4.517 - 4.515 6.125 - 6.123 4 3/8 x 5/16
TL1-0026 12 .615 5.484 5.875 5.517 - 5.515 7.125 - 7.120 6 3/8 x 6 1/4
TL1-0027 12 .740 6.984 7.500 7.017 - 7.015 9.125 - 9.120 6 1/2 x 8 1/16
TL1-0028 12 .740 7.984 8.500 8.017 - 8.015 10.125 - 10.120 6 1/2 x 9 1/16

TL2 Torque Limiter Clutch / Brake Chart A
Model Torque Adj. Range (lb. ft.) Bores (+.001) Bores (-.001) Keyway
A
B		 Hub Bore Min.
C		 Hub Bore Max.
C
L1
L2
TL2-0020 0-10 1/2 5/8 1/8 x 1/16 2.125 2.188 .375 .750 1.625 .438
TL2-0021 10-25 3/4 7/8 3/16 x 3/32 2.625 2.188 .500 1.000 11.313 .563
TL2-0022 25-50 1 1 1/8 3/16 x 1/16 3.375 2.781 .625 1.250 2.688 .563
TL2-0023 50-100 1 1/4 1 3/8 1/4 x 1/8 3.500 3.563 .875 1.500 2.688 .688
TL2-0024 100-175 1 1/2 1 5/8 5/16 x 5/32 3.750 4.063 1.000 1.750 2.813 .813
TL2-0025 175-300 1 3/4 1 7/8 3/8 x 3/16 4.625 4.875 1.250 2.000 3.563 .938
TL2-0026 300-500 2 2 1/4 7/16 x 7/32 5.625 5.875 1.750 2.500 4.188 1.375
TL2-0027 500-1000 2 1/2 2 3/4 9/16 x 9/32 7.500 7.500 2.000 3.250 5.375 2.000
TL2-0028 1000-1500 2 3/4 3 9/16 x 9/32 8.500 8.500 2.000 3.500 6.125 2.250

TL3 Torque Limiter Clutch / Brake Chart A
Model Torque Adj. Range (lb. ft.) Std. Bores (+.001) Body Bores (-.001) Keyway Bores
A
B
C		 Screws
TL3-0020 0-10 1/2 5/8 1/8 x 1/16 2.438 3.125 1.000 3
TL3-0021 10-25 3/4 7/8 3/16 x 3/32 3.000 3.125 1.250 3
TL3-0022 25-50 1 1 1/8 3/16 x 3/32 4.000 3.625 1.625 3
TL3-0023 50-100 1 1/4 1 3/8 1/4 x 1/8 4.000 4.625 1.750 3
TL3-0024 100-175 1 1/2 1 5/8 5/16 x 5/32 4.125 5.250 2.000 3
TL3-0025 175-300 1 3/4 1 7/8 3/8 x 3/16 4.625 6.500 2.313 4
TL3-0026 300-500 2 2 1/4 7/16 x 7/32 5.750 7.125 2.813 6
TL3-0027 500-1000 2 1/2 2 3/4 9/16 x 9/32 7.125 9.125 4.000 6
TL3-0028 1000-1500 2 3/4 3 9/16 x 9/32 7.500 10.125 4.500 6

TL3 Torque Limiter Clutch / Brake Chart B
Model Screw Size B.C.
D		 Max.
Q		 Sprocket Min. Pitch Dia. Cup Locating Dia. I.D.
J		 Dim. Cup-Body Shoulder
S
TL3-0020 1/4 2 9/16 .750 4.000 2.017 - 2.015 0.094
TL3-0021 1/4 2 9/16 1.000 4.250 2.017 - 2.015 0.063
TL3-0022 1/4 2 1/16 1.250 4.750 2.517 - 2.515 0.063
TL3-0023 1/4 3 5/16 1.250 5.625 3.267 - 3.265 0.063
TL3-0024 1/4 4 7/16 1.250 6.250 3.767 - 3.765 0.063
TL3-0025 3/8 5 1/2 1.250 7.500 4.517 - 4.515 0.063
TL3-0026 3/8 6 1/4 1.750 8.500 5.517 - 5.515 0.125
TL3-0027 1/2 8 1/16 2.000 10.000 7.017 - 7.015 0.063
TL3-0028 1/2 9 1/16 2.000 11.250 8.015 - 8.015 0.063

Torque Limiter Diagram 2

In addition to our standard Multiple Disc Mechanical Torque Limiters, our engineering department can custom design and manufacture a new component to meet your specific requirements. If you have further questions or would like to discuss your specific needs, please contact us.


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