FD12 1 Directional Backstop Freewheel Sprag Type Clutch

Features

Internal Freewheels FD are sprag freewheels without an inner ring. The customer s hardened and ground shaft is used as the inner track.

The freewheels FD are used as:

➧Backstops

➧Overrunning Clutches ➧Indexing Freewheels

The standard type and type with P-grinding for increased service life and indexing accuracy do not have bearing support. In the case of the standard type, every second sprag has been be replaced by a cylindrical roller; this freewheel can accept radial forces.

Nominal torques up to 2 400 Nm. The torque is transmitted on the outer ring by press fit.

Dimensions and Capacities

The maximum transmissible torque is 2 times the specified nominal torque. See page 14 for determination of selection torque.

The maximum speed values listed above apply to installation conditions as they are given for Complete Freewheels. If the actual installation conditions are known, higher speeds may be permitted

under certain circumstances.

Mounting and Coupling

Application example

Two Internal Freewheels FD 40 CFR of standard type with bearing support as overrunning c lutches in the drive of the transport rollers in a p ackaging distribution unit. In normal opera tion, the transport rollers are driven by means of the freewheels that are working in driving operation. At the withdrawal station, the arriving packages can easily slip off as the drive is overrun by the freewheel (freewheeling oper ation).

Mounting
Internal freewheels FD in type standard and type with P-grinding are without bearing support. Concentric alignment of inner and outer ring must be provided by the customer. The per- missible run out (T.I.R.) must be observed. The torque is transmitted on the outer ring by press fit. In order to transmit the torques specified in the table, the outer ring must be accommodated in a housing with an external diameter K. The housing is made of steel or grey cast iron in minimum quality GG-20. When using other housing materials or smaller external diameters, we urge you to contact us regarding the transmissible torque. The tolerance of the housing bore D must be ISO P6. Please note the technical points on page 118 regarding the sprag track (shaft). The permissible operating temperature of the freewheel is - 40°C to 80°C.

Lubrication
An oil lubrication of the specified quality must be provided.
Example for ordering

Freewheel size FD 12, standard type: • FD 12 CFH

Pictures

Changzhou Suma Precision Machinery Co., Ltd was established in 2005, which was a professional and non-stop manufacturer for mechanical parts, integrates into R&D, Design, Manufacturing and Sales .

The main Catagories are :

One Way Clutch Bearing:  CSK, ASNU, AS , NF, FE, DC, FWD, BWC, AXK, AA, B200, BB, CKA, ... 

Backstop Clutch : BS, MZ, FSO, HPI,  PB, BS...R, NJ, NYD, NF, CKZ, RSBW, AV , ... 

Overrunning clutch:  FXM,  GFR, RSCI, RSXM, CKL-A, CKF-A, RSBI, GFK, GV, GVG, BSEU, ... 

Needle Roller Bearings: HF,HFL, RC, RCB, FC, FCB, OWC, EWC, 1WC, HK, SCE, BCE, IR, ...

Cam follower bearings : CF, KR, CFE, CFH, CYR, CYR...S, NATV, NATR, NUTR, KRV, RSTO, ...

Spherical Plain Bearings : GE, GE...ES-2RS, GE...DO-2RS, GEG...ES-2RS, GEEW...ES-2RS, GE...UK-2RS, GE...ET-2ES, ...

Advantage of Company 

• ​Germany Technology Introduction ensure goods reach an top-level quality . 
• Core Technical Team ensure ability to Find out - Work out problems more efficiently . 
• Over 15 Years Production Experience makes us easier to find out a solution from any industrial field . 
• Superior Equipment Production Line ensure goods produced under strictly quality control . 
• OEM / ODM available significantly save the customer's funds and enlarge the benefits. 

Advantage of Products 

• High Torque Transmission 
• High Load Capacity 
• Preferable Wear Resistance 
• Free Sample Quality Test Service （specially for small standard item）
• Pre-Lubricated ensure its Long Life Using Time 

Application Field 

  With a wide range of variety  ( Over 100 different patterns and more than thousands sizes available ), products are widely used in Printing Machine, Packaging Machine ,Conveyor System, Bucket Elevator, Gearbox , Reducer, Gearmotor, Electronics Toy, Hydraulic System and any power transmission industrial field. 

Market 

  With over 13 years experience, well equipped testing facilities and strict quality control, Changzhou Suma Precision Machinery Co., Ltd products sell well all over the world, the main markets are European, America, Canada, Brazil, India, Asia, etc . It was a certified enterprise with Quality Management System ISO9001:2015, SGS , Safety Certificate of Approval for Mining Products . In the meantime, with accurate control of key process and technical support from engineer team, customized products are also available. Stable product performance and reliable after sales service always are our only way to win customer.