Shanghai Reijay Hydraulic & Transmission Tech Co., Ltd.
Let all powerful companies become our customer. Let all our customers become powerful.
Add to Cart
It is an anti-reverse device suitable for high-speed operation. The NF-type backstop has several shaped blocks distributed in the raceway formed by the inner and outer rings. When the inner ring is running forward, it drives the shaped blocks to rotate together. When the speed is within a certain range, the shaped blocks deflector under the action of centrifugal force and disconnect with the inner and outer rings to achieve wear-free operation. When the inner ring runs in reverse, the shaped block is in contact with the inner and outer rings under the action of the spring, and the wedge is tight into one to withstand the reverse torque transmitted by the inner ring.
Technical Specifications
| Model number | Rated torque (N.m) | Allowable (rpm) | Non-contact RPM (rpm) | Aperture range dmin~d | Shaft extension required Length Smin~S | Φ D | Φ d | H | B | L | L1 | L2 | L3 | Mass kg |
| NF10 | 1000 | 1500 | 450 | 32~50 | 110~145 | 195 | 28 | 284 | 150 | 170 | 25 | 20 | 5 | 25 |
| NF16 | 1600 | 1500 | 450 | 45~60 | 110~150 | 215 | 32 | 305.5 | 160 | 175 | 25 | 22 | 5 | 31 |
| NF25 | 2500 | 1500 | 425 | 50~70 | 115~155 | 235 | 38 | 332.5 | 170 | 182 | 25 | 25 | 5 | 38 |
| NF40 | 4000 | 1500 | 425 | 60~80 | 120~166 | 250 | 42 | 360 | 185 | 191 | 28 | 30 | 5 | 49 |
| NF63 | 6300 | 1500 | 400 | 70~90 | 125~180 | 265 | 45 | 382.5 | 195 | 204 | 30 | 35 | 5 | 62 |
| NF80 | 8000 | 1500 | 400 | 80~200 | 130~185 | 280 | 48 | 410 | 210 | 208 | 35 | 35 | 5 | 73 |
| NF100 | 10000 | 1500 | 400 | 90~110 | 140~220 | 300 | 52 | 435 | 225 | 245 | 35 | 45 | 5 | 98 |
| NF125 | 12500 | 1500 | 375 | 100~130 | 160~250 | 335 | 58 | 487.5 | 250 | 270 | 40 | 50 | 8 | 154 |
| NF160 | 16000 | 1000 | 375 | 110~140 | 165~260 | 365 | 62 | 526.5 | 260 | 281 | 40 | 55 | 8 | 175 |
| NF200 | 20000 | 1000 | 350 | 120~150 | 175~260 | 415 | 65 | 587.5 | 300 | 282 | 50 | 58 | 8 | 214 |
| NF250 | 25000 | 1000 | 350 | 130~160 | 180~270 | 455 | 70 | 642.5 | 335 | 292 | 50 | 63 | 8 | 256 |
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