The JSP Brake Disc Grid Coupling integrates a disc brake mounting surface into the grid coupling hub, combining flexible torque transmission with disc-type braking capability. Available in 11 sizes from 200 to 16,000 N·m with brake disc diameters from 315 to 900 mm, it serves precision braking applications in paper mills, printing lines, and machine tools.
The JSP Brake Disc Grid Coupling combines the proven serpentine spring torque transmission mechanism with an integrated disc brake mounting surface, enabling caliper-actuated disc braking directly on the coupling hub. Unlike the JSZ variant that accommodates shoe-type brakes, the JSP is engineered for disc brake systems — the preferred braking technology where precise stopping control, shorter stopping distances, and consistent brake performance are paramount.
Available in 11 sizes from JSP1 (200 N·m, 315 mm disc) to JSP11 (16,000 N·m, 900 mm disc), the JSP serves industries that demand repeatable, fade-resistant braking combined with torsional vibration isolation. The disc brake surface (D₀) and width (B) are machined to interface directly with standard hydraulic, pneumatic, or spring-applied caliper brakes, eliminating the need for separate disc mounting adapters.
Disc brakes deliver more consistent and controllable stopping torque than shoe brakes, with shorter response times and less torque fade during repeated braking cycles.
Integrating the brake disc into the coupling hub reduces overall drivetrain length and eliminates a separate disc-hub adapter, saving space and simplifying alignment.
The exposed disc surface provides superior heat rejection compared to enclosed drum brakes, maintaining consistent braking performance during high-frequency stop-start operations.
From lightweight precision equipment (JSP1 at 200 N·m) to heavy industrial drives (JSP11 at 16,000 N·m), the range covers a broad spectrum of disc-braked applications.
The disc surface accommodates hydraulic, pneumatic, and spring-applied caliper brakes from all major manufacturers without proprietary adapters.
The serpentine spring element between the disc hub and the opposing shaft hub absorbs torsional transients generated during braking, protecting gearbox internals from shock loads.
Note: Weight without bore holes. Disc brake pad width (B) is 30 mm for all models. Disc diameters (D0) increase with torque rating to provide adequate braking surface area.
Winder drives, unwinder tension brakes, and calender roll drives where disc brakes provide the precise torque control needed to maintain web tension and prevent sheet breaks.
| Model | Nominal Torque Tn (N·m) |
Max Speed (rpm) |
Disc D₀ (mm) |
Shaft Bore d (mm) |
Bore Length L (mm) |
L1 (mm) | D (mm) | D1 (mm) | C (mm) | Weight (kg) |
Lubricant (kg) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| JSP1 | 200 | 3,800 | 315 | 20–50 | 63 | 88 | 150 | 125 | 3 | 9.58 | 0.09 |
| JSP2 | 315 | 3,200 | 315 | 25–63 | 76 | 88 | 162 | 133 | 3 | 12.35 | 0.12 |
| JSP3 | 630 | 2,800 | – | 30–75 | 88 | 88 | 193 | 152 | 3 | 19.9 | 0.17 |
| JSP4 | 1,000 | 2,700 | 400 | 35–85 | 98 | – | 212 | 179 | – | 28.42 | 0.26 |
| JSP5 | 1,800 | 2,400 | 400 | 40–100 | 120 | 119 | 250 | 216 | 5 | 47.76 | 0.43 |
| JSP6 | 2,800 | 2,200 | 450 | 50–110 | 127 | 146 | 270 | 241 | 5 | 64.92 | 0.51 |
| JSP7 | 4,500 | 2,000 | 500 | 60–125 | 150 | 149 | 308 | 276 | – | 91.35 | 0.74 |
| JSP8 | 6,300 | 1,800 | 560 | 70–150 | 162 | 152 | 346 | 295 | 6 | 131.66 | 0.91 |
| JSP9 | 9,000 | 1,600 | 630 | 80–180 | 184 | 158 | 384 | 330 | – | 184.80 | 1.14 |
| JSP10 | 12,500 | 1,500 | 800 | 90–200 | 182 | 183 | 453 | 368 | – | 253.4 | 1.91 |
| JSP11 | 16,000 | 1,300 | 900 | 100–220 | 198 | 198 | 500 | 400 | – | 336.4 | 2.82 |
Impression cylinder drives and registration-critical shafts where disc brakes enable rapid, repeatable positioning stops essential for print quality and register accuracy.
Spindle drives and rotary table axes on lathes, boring mills, and machining centres where disc brakes provide the precise angular positioning needed for workpiece indexing.
Yaw drive couplings where disc brakes control nacelle orientation, and the serpentine spring absorbs the cyclic torsional loads generated by wind gusts and turbulence.
★★★★★ — Paper Mill, Sweden
Industry: Pulp & Paper | Application: Winder Tension Brake Drive
We fitted JSP7 couplings with hydraulic caliper brakes on two new winder drives. The disc brake provides the precise tension control we need for our lightweight specialty papers at speeds up to 1,800 m/min. Brake disc runout measured less than 0.03 mm after 16 months of service — outstanding consistency.
— Winder Section Lead, Varmland Paper AB
★★★★★ — Cement Plant, Indonesia
Industry: Building Materials | Application: Vertical Mill Separator Drive
The JSP9 coupling replaced a separate disc-plus-coupling assembly on our cement vertical mill separator. The integrated design reduced the drivetrain length by 95 mm, which was essential for our tight mill house layout. Vibration reduction at the gearbox input bearing was measured at 19%.
— Mechanical Maintenance Manager, Java Cement Works
★★★★☆ — Steel Processing, Poland
Industry: Steel & Metals | Application: Coil Rewind Line
Our coil rewind line uses JSP5 couplings with spring-applied hydraulic-release calipers for emergency hold. The disc brake response time of 180 ms meets our safety requirements. We noted that the standard 30 mm disc width limits pad selection to specific manufacturers — a wider disc option would improve flexibility.
— Automation Engineer, Katowice Strip Processing
RP supplies JSP brake disc grid couplings with precision disc machining, custom bore configurations, and full material traceability. From single-unit machine tool retrofits to production-line fleet orders, every coupling delivers verified disc runout, dynamic balance, and a 12-month product warranty.
Response within 24 hours | Custom bores available
Our coil rewind line uses JSP5 couplings with spring-applied hydraulic-release calipers for emergency hold. The disc brake response time of 180 ms meets our safety requirements. We noted that the standard 30 mm disc width limits pad selection to specific manufacturers — a wider disc option would improve flexibility.
— Automation Engineer, Katowice Strip Processing
RP supplies JSP brake disc grid couplings with precision disc machining, custom bore configurations, and full material traceability. From single-unit machine tool retrofits to production-line fleet orders, every coupling delivers verified disc runout, dynamic balance, and a 12-month product warranty.
Get a JSP Quotation
See Full Coupling Range
Response within 24 hours | Custom bores available
Stainless steel gearboxes are widely used in industrial transmission fields due to their high strength and corrosion resistance. However, in actual use, stainless steel gearboxes may still malfunction due to improper design, installation, lubrication or maintenance....
In modern logistics automation systems, the CC600 Crate Conveyor Chain in Amsterdam plays a crucial role. With the continuous development of warehousing and sorting technologies, enterprises have increasingly higher requirements for the stability, efficiency and...
This article mainly explains and analyzes the structural design characteristics of the sprocket based on its role in the scraper conveyor, thereby leading to the necessity of researching the material and processing technology of the sprocket and the key technical...
