Shanghai Reijay Hydraulic & Transmission Tech Co., Ltd.
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It is a contact anti-reverse device suitable for low-speed shafts. Compared with the ordinary backstop (roller backstop, ratchet, brake), it has the advantages of lightweight, compact structure, reliable force transmission, easy release, convenient installation, and low installation accuracy requirements under the same backstop torque.
NJ type backstop is several shaped blocks arranged between the inner and outer rings according to a specific law; when the inner ring is rotating forward, the shaped block is in gentle contact with the inner and outer rings; when the inner ring is rotating backwards, the shaped block under the action of the spring force, the inner and outer rings are wedged tight, thus bearing the backcheck torque.
Technical Specifications
| Model number | Rated check moment (kN.m) | Allowable speed (rpm) | Φd aperture range (mm) | Idling resistance moment (N.m) | B | C | ΦD | H | h | L | Mass (kg) |
| NJ 8 | 8 | 150 | 80 ~ 95 | 10 | 105 | 12 | 230 | 380 | 55 | 110 | 36 |
| NJ11 | 11 | 150 | 90 ~ 110 | 15 | 110 | 14 | 280 | 420 | 60 | 115 | 49 |
| NJ 25 | 25 | 100 | 120 ~ 160 | 35 | 120 | 16 | 360 | 610 | 65 | 140 | 112 |
| NJ 38 | 38 | 100 | 160 ~ 200 | 45 | 130 | 20 | 430 | 620 | 70 | 160 | 183 |
| NJ 50 | 50 | 80 | 160 ~ 220 | 75 | 240 | 272 | 500 | 820 | 80 | 230 | 355 |
| NJ 90 | 90 | 50 | 180 ~ 250 | 95 | 290 | 300 | 600 | 1000 | 100 | 290 | 644 |
| NJ 125 | 125 | 50 | 200 ~ 270 | 100 | 300 | 300 | 650 | 1100 | 110 | 290 | 755 |
| NJ 180 | 180 | 50 | 230 ~ 300 | 110 | 350 | 300 | 780 | 1300 | 135 | 290 | 1088 |
| NJ 270 | 270 | 50 | 250 ~ 320 | 140 | 380 | 360 | 850 | 1500 | 135 | 320 | 1426 |
| NJ 320 | 320 | 50 | 250 ~ 350 | 160 | 410 | 380 | 930 | 1600 | 135 | 360 | 1921 |
| NJ 520 | 520 | 50 | 320 ~ 420 | 220 | 470 | 460 | 1030 | 1800 | 165 | 450 | 2945 |
| NJ 700 | 700 | 50 | 350 ~ 450 | 250 | 520 | 460 | 1090 | 2000 | 165 | 480 | 3518 |
Our Strategic Partners
Founded in 2003, Shanghai Reijay Hydraulic & Transmission Tech Co., Ltd focus on mechanical power transmission coupling, hydraulic system spare parts and heat exchanger products (oil heating and cooling equipment) manufacture and export. We also provide relevant technical support and service. We also serve customers with the design, assembly, remoulding and maintenance of industrial automation components (pneumatic, hydraulic, PLC), industrial intelligent systems, hydraulic power units and drive sections.
Q: Who are we?
We are based in Shanghai, China, started in 2003, sell to Domestic Market(50.00%), North America(25.00%), Europe(5.00%), Africa(5.00%), Southeast Asia(5.00%), South America(5.00%)... There are about 180-300 people in our office and factory.
Q: How can we guarantee quality?
Always a pre-production sample before mass production; Always final Inspection before shipment
Q: What information should I tell you to confirm the product?
Motor drawing or other technique parameters
Q: What can you buy from us?
Couplings, Bellhousings, Oil tanks, Cleaning Covers, Coolers, Hydraulic parts, etc.
Q: Why should you buy from us, not from other suppliers?
We are a professional OEM manufacturer with 20 years of history, focusing on mechanical power transmission coupling, hydraulic system spare parts and heat exchanger product manufacture and export. We also provide relevant technical support and service.
Q: What is your product warranty period?
We offer 2-10 years of service life since the vessel departure date left China.
Q: What services can we provide?
Accepted Delivery Terms: FOB, CFR, CIF, EXW, CIP, FCA, Express Delivery；
Accepted Payment Currency: USD, EUR, HKD, CNY;
Accepted Payment Type: T/T,L/C,D/P D/A,PayPal,Western Union;
Language Spoken: English, Chinese, Spanish