RL系列膜片聯軸器是結合歐洲與日本等優(yōu)質產品基礎之上獨立開發(fā)的高品質產品。膜片式聯軸器擁有更小的體積，更大的同型扭矩和更合理的配比尺寸，補償范圍大，質量輕轉動慣量小螺栓與膜片組的孔連接部位采用特殊的彈性墊套設計，極大減小了孔緣部位應力的集中，杜絕膜片的撕裂交損，延長使用壽命。

膜片彈性聯軸器采用模塊化設計，裝配簡單，維修更換快捷。性能遠超國標JM系列產品，大量應用于風機系統(tǒng)，汽輪機組及其他重要工業(yè)領域。

彈性膜片聯軸器在傳遞扭矩的同時通過彈性膜片的的變形來補償軸向和角向的位移，是一種高性能的金屬彈性撓性聯軸器。彈性聯軸器結構緊湊，傳遞扭矩大，使用壽命長，免維護，耐高溫，耐酸堿防腐蝕，適用于高溫高速及有腐蝕工況環(huán)境的軸系傳動。

The steel lamina coupling is an efficient flexible coupling with no back clearance and free from maintenance. Due to its unique structural design, it can achieve the perfect delivery of torque. Meanwhile, it has excellent performances, including large axial and radial compensation ability, low reply feedback force and wide thermal adaptability, etc. With different change design, it can be applied at most power transmission sites.

Rokee's RL series steel laminae coupling is a high-quality product developed independently on basis of combination of advanced products from Europe and Japan, etc. It has smaller size, larger torque of the same model, more reasonable proportioning size, large compensation scope, light weight and small rotational inertia. With modularized design, it’s easy for assembly, maintenance and replacement. Its performance far exceeds the one of JM series diaphragm coupling. It’s widely applied in the fields of fan systems, turboset and other pumps, etc.

靠背輪聯軸器用來將不同機構中的主動軸和從動軸牢固地聯接起來一同旋轉，并傳遞運動和扭矩的機械部件。有時也用以聯接軸與其他零件（如齒輪、帶輪等）。

靠背輪常由兩半合成，分別用鍵或緊配合等聯接，緊固在兩軸端，再通過某種方式將兩半聯接起來。

靠背輪聯軸器可兼有補償兩軸之間由于制造安裝不精確、工作時的變形或熱膨脹等原因所發(fā)生的偏移（包括軸向偏移、徑向偏移、角偏移或綜合偏移）；以及緩和沖擊、吸振。

靠背輪為俗稱，專業(yè)叫法為聯軸器以及法蘭，用于機械設備的連接。