• SUNGIL STL Safety Coupling, Disk Coupling Type (5 Ranges to 150 N·m)
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SUNGIL STL Safety Coupling, Disk Coupling Type (5 Ranges to 150 N·m)

SUNGIL STL Safety Coupling, Disk Coupling Type (5 Ranges to 150 N·m)

Ball-detent torque limiter combined with a disk coupling that disengages on overload to protect the drive. Disengagement torque is set by an adjusting nut with spring pressure indicator.

Key features

  • Disengages mechanically when the set torque is exceeded
  • Plate spring coupling absorbs parallel and angular misalignment
  • Adjustable torque; L/M/H spring sets per size
  • Limiter side clamps by set-screw (N) or A.P. Lock (P)
  • Disengagement can be detected by a limit switch or proximity sensor

Specifications

Type Coupling attached safety coupling
Torque setting Adjusting nut, factory preset (TS) optional
Torque error Within ±10% of set value
Limiter-side clamping General set-screw (N) / A.P. Lock (P)
Shaft tolerance h7 recommended
Source SUNGIL Product Catalogue 2026 (STL series, pp. 134-139)
STL25-L Torque range: 1.5-7 N·m | Spring: Blue x3 | OD x L: 74 x 95.6 mm | Max speed: 700 rpm | d1 bores (mm): 10,11,12,14,15,16,17,18,19,20,21,22,24,25 | d2 bores N/P (mm): 10,11,12,14,15 / 10,11,12
STL25-M Torque range: 4.5-20 N·m | Spring: Red x6 | OD x L: 74 x 95.6 mm | Max speed: 700 rpm | d1 bores (mm): 10,11,12,14,15,16,17,18,19,20,21,22,24,25 | d2 bores N/P (mm): 10,11,12,14,15 / 10,11,12
STL25-H Torque range: 9-25 N·m | Spring: Green x6 | OD x L: 74 x 95.6 mm | Max speed: 700 rpm | d1 bores (mm): 10,11,12,14,15,16,17,18,19,20,21,22,24,25 | d2 bores N/P (mm): 10,11,12,14,15 / 10,11,12
STL55-L Torque range: 7.5-27 N·m | Spring: Blue x6 | OD x L: 104 x 120.8 mm | Max speed: 550 rpm | d1 bores (mm): 15,16,17,18,19,20,21,22,24,25,28,30,32,35 | d2 bores N/P (mm): 14,15,16,17,18,19,20,21,22,24,25 / 14,15,16,17,18,19,20
STL55-M Torque range: 13.5-41 N·m | Spring: Red x6 | OD x L: 104 x 120.8 mm | Max speed: 550 rpm | d1 bores (mm): 15,16,17,18,19,20,21,22,24,25,28,30,32,35 | d2 bores N/P (mm): 14,15,16,17,18,19,20,21,22,24,25 / 14,15,16,17,18,19,20
STL55-H Torque range: 21-55 N·m | Spring: Green x6 | OD x L: 104 x 120.8 mm | Max speed: 550 rpm | d1 bores (mm): 15,16,17,18,19,20,21,22,24,25,28,30,32,35 | d2 bores N/P (mm): 14,15,16,17,18,19,20,21,22,24,25 / 14,15,16,17,18,19,20
STL150-L Torque range: 20-50 N·m | Spring: Blue x5 | OD x L: 125 x 144.9 mm | Max speed: 400 rpm | d1 bores (mm): 20,21,22,24,25,28,30,32,35,38,40,42,45 | d2 bores N/P (mm): 15,16,17,18,19,20,21,22,24,25,28,30,32,35 / 15,16,17,18,19,20,22,24,25,28,30,32,35
STL150-M Torque range: 30-80 N·m | Spring: Red x5 | OD x L: 125 x 144.9 mm | Max speed: 400 rpm | d1 bores (mm): 20,21,22,24,25,28,30,32,35,38,40,42,45 | d2 bores N/P (mm): 15,16,17,18,19,20,21,22,24,25,28,30,32,35 / 15,16,17,18,19,20,22,24,25,28,30,32,35
STL150-H Torque range: 55-150 N·m | Spring: Green x10 | OD x L: 125 x 144.9 mm | Max speed: 400 rpm | d1 bores (mm): 20,21,22,24,25,28,30,32,35,38,40,42,45 | d2 bores N/P (mm): 15,16,17,18,19,20,21,22,24,25,28,30,32,35 / 15,16,17,18,19,20,22,24,25,28,30,32,35
Safety CouplingSUNGIL
9 product codes available in this family
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SUNGIL STL Safety Coupling, Disk Coupling Type (5 Ranges to 150 N·m)

Brand SUNGIL·Safety Coupling

Available part numbers (9)

STL25-L, STL25-M, STL25-H, STL55-L, STL55-M, STL55-H, STL150-L, STL150-M, STL150-H

How to order

Send the SUNGIL part numbers and quantities through our RFQ form or to info@prosourcemro.com. We confirm price, availability and lead time within 1 business day — no account needed.

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STL25-LTorque range: 1.5-7 N·m | Spring: Blue x3 | OD x L: 74 x 95.6 mm | Max speed: 700 rpm | d1 bores (mm): 10,11,12,14,15,16,17,18,19,20,21,22,24,25 | d2 bores N/P (mm): 10,11,12,14,15 / 10,11,12
STL25-MTorque range: 4.5-20 N·m | Spring: Red x6 | OD x L: 74 x 95.6 mm | Max speed: 700 rpm | d1 bores (mm): 10,11,12,14,15,16,17,18,19,20,21,22,24,25 | d2 bores N/P (mm): 10,11,12,14,15 / 10,11,12
STL25-HTorque range: 9-25 N·m | Spring: Green x6 | OD x L: 74 x 95.6 mm | Max speed: 700 rpm | d1 bores (mm): 10,11,12,14,15,16,17,18,19,20,21,22,24,25 | d2 bores N/P (mm): 10,11,12,14,15 / 10,11,12
STL55-LTorque range: 7.5-27 N·m | Spring: Blue x6 | OD x L: 104 x 120.8 mm | Max speed: 550 rpm | d1 bores (mm): 15,16,17,18,19,20,21,22,24,25,28,30,32,35 | d2 bores N/P (mm): 14,15,16,17,18,19,20,21,22,24,25 / 14,15,16,17,18,19,20
STL55-MTorque range: 13.5-41 N·m | Spring: Red x6 | OD x L: 104 x 120.8 mm | Max speed: 550 rpm | d1 bores (mm): 15,16,17,18,19,20,21,22,24,25,28,30,32,35 | d2 bores N/P (mm): 14,15,16,17,18,19,20,21,22,24,25 / 14,15,16,17,18,19,20
STL55-HTorque range: 21-55 N·m | Spring: Green x6 | OD x L: 104 x 120.8 mm | Max speed: 550 rpm | d1 bores (mm): 15,16,17,18,19,20,21,22,24,25,28,30,32,35 | d2 bores N/P (mm): 14,15,16,17,18,19,20,21,22,24,25 / 14,15,16,17,18,19,20
STL150-LTorque range: 20-50 N·m | Spring: Blue x5 | OD x L: 125 x 144.9 mm | Max speed: 400 rpm | d1 bores (mm): 20,21,22,24,25,28,30,32,35,38,40,42,45 | d2 bores N/P (mm): 15,16,17,18,19,20,21,22,24,25,28,30,32,35 / 15,16,17,18,19,20,22,24,25,28,30,32,35
STL150-MTorque range: 30-80 N·m | Spring: Red x5 | OD x L: 125 x 144.9 mm | Max speed: 400 rpm | d1 bores (mm): 20,21,22,24,25,28,30,32,35,38,40,42,45 | d2 bores N/P (mm): 15,16,17,18,19,20,21,22,24,25,28,30,32,35 / 15,16,17,18,19,20,22,24,25,28,30,32,35
STL150-HTorque range: 55-150 N·m | Spring: Green x10 | OD x L: 125 x 144.9 mm | Max speed: 400 rpm | d1 bores (mm): 20,21,22,24,25,28,30,32,35,38,40,42,45 | d2 bores N/P (mm): 15,16,17,18,19,20,21,22,24,25,28,30,32,35 / 15,16,17,18,19,20,22,24,25,28,30,32,35

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