Connecting Links for Large Size Conveyor Chain Screw Lock Link
- With just a torque wrench, anyone can easily, safely, and reliably make cuts and connections.
- This connecting link makes the dangerous and technically demanding task of cutting and connecting large size conveyor chains easy for anyone to carry out with just a torque wrench.
- Conventionally, cutting and connecting was done using a hammer, but
- ・Danger
As the hammer must be hit hard, there is a risk of workplace accidents, such as flying fragments or hit the hand. - ・Technology required
If not done properly, poor articulation may occur due to the outer plate pushing in too far. - ・Requires more work hours and affects productivity
As mentioned above, technology is required, and a technician may need to be arranged. - ・Requires a lot of tools and jigs.
As the chain becomes larger, larger tools and jigs may be required… - There were various problems, such as the above.
- With the Screw Lock Link, all anyone has to do is tighten the nut to the specified torque with a torque wrench, making it easy, safe, quick, and reliable for anyone to perform the cutting and connecting work.
Contents
Catalogs ・Instruction Manuals
Construction
2 types of nuts available
A short type with a minimized pin length is also available.
※HARDLOCK Nut and HARDLOCK Bearing Nut are trademarks or registered trademarks of HARDLOCK Industry Co., Ltd.
Main applicable products
Large size conveyor chain DT Series
Our most economical general use conveyor chain. (Basic model )
Large size conveyor chain DTA Series
Has 3x bush-roller wear resistance of DT Series.
Large size conveyor chain AT Series
Compared to the DT series, it has approximately twice the maximum allowable load, improving the wear resistance between the bush and roller and the roller allowable load.
Large size conveyor chain ATA Series
Has 2x bush-roller wear resistance & 1.5x pin-bush wear resistance of AT Series, along with 1.2x maximum allowable load.
Large size conveyor chain SS Series
Superior corrosion, chemical, heat and cold resistance stainless steel chain.
Large size conveyor chain GS Series
Compared to the DT series, this is a stainless steel chain (stainless steel 400 series) with improved corrosion resistance.
Please see below for other specifications that can be produced.
Handling Instructions
| ⚠Notes |
Whether the conveyor is parallel, slanted, or vertical, always attach a chain block or piano wire to the area to be connected/disconnected to ensure there is no tension on the chain. |
|---|
Connection
1. Remove the nuts and the connecting link plate.
2. Pull both ends of the chain together, insert the connecting link into the joints of the inner link, and place the connecting link plate over the pin ends.
3. Tighten the lower nut at the torque prescribed below. Before tightening the nut, remove oil and other substances from the screw threads using a cloth.
4. Tighten the upper nut at the torque prescribed below to complete connection.
Nut Tightening Torque (N・m) ※1
| RF10 | RF12 | RF17 | RF26 | RF36 | RF52 | RF60 | RF90 | ||
|---|---|---|---|---|---|---|---|---|---|
| Standard type ※2 | Nut Size | M12×P1.75 | M12×P1.75 | M14×P2.0 | M16×P2.0 | M20×P2.5 | M24×P3.0 | M27×P3.0 | M30×P3.5 |
| Lower Nut | 27～32 | 28～33 | 46～55 | 72～82 | 120～130 | 218～228 | 250～260 | 367～377 | |
| Upper Nut | 27～32 | 28～33 | 46～55 | 72～82 | 120～130 | 218～228 | 250～260 | 367～377 | |
| Short type ※3 | Nut Size | M12×P1.0 | M12×P1.0 | M15×P1.0 | M17×P1.0 | M20×P1.0 | M25×P1.5 | M30×P1.5 | M35×P1.5 |
| Lower Nut | 23～27 | 28～33 | 49～58 | 76～86 | 117～127 | 227～237 | 254～264 | 428～438 | |
| Upper Nut | 16～19 | 16～19 | 28～33 | 37～44 | 55～65 | 80～90 | 115～125 | 130～140 | |
- ※1.The tightening torque in the above table is for steel nuts. Contact a Tsubaki representative regarding stainless steel nuts.
- ※2.As the bolt will protrude when tightening the lower nut, use of a deep socket is recommended for the standard type.
- ※3.The short type is a 4-notched nut. Use a hook spanner or socket wrench.
Disconnecting
- 1. Remove the upper nut, then the lower nut.
※Nuts may be difficult to remove due to things like residue from conveyed items or corrosion. - 2. Remove the connecting link plate, then remove the connecting link from the inner link.
Maintenance and Inspection
Nuts may come loose or fall off depending on usage environment and conditions. Periodically check for loosening of the nuts. (Making matchmarks on the nuts makes it easier to check them.) )
Product specifications list
Standard type
Short type
| Size | Max. allowable load | Min. tensile strength | Pitch P |
Pin | Nut Size | Connecting Bush Flange Dia. |
Approx. Additional Mass (kg/each ) |
||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Joint pin | |||||||||||||
| DT kN{kgf} |
AT kN{kgf} |
DT kN{kgf} |
AT kN{kgf} |
L3 | Standard type |
Short type |
Standard type |
Short type |
A | Standard type |
Short type |
||
| L4 | L5 | ||||||||||||
| RF10100 | 17.6 {1790} |
32.3 {3290} |
107 {11000} |
169 {17000} |
100 | 33 | 48.5 | 42 | M12 | M12 | 25 | 0.13 | 0.08 |
| RF10125 | 125 | ||||||||||||
| RF10150 | 150 | ||||||||||||
| RF12200 | 26.6 {2710} |
39.9 {4060} |
160 {16500} |
249 {25500} |
200 | 40.5 | 55.5 | 49 | M12 | M12 | 28 | 0.17 | 0.11 |
| RF12250 | 250 | ||||||||||||
| RF17200 | 35.0 {3570} |
55.3 {5640} |
213 {22000} |
336 {34000} |
200 | 51.5 | 69.5 | 61.5 | M14 | M15 | 32 | 0.25 | 0.14 |
| RF17250 | 250 | ||||||||||||
| RF17300 | 300 | ||||||||||||
| RF26200 | 44.9 {4570} |
74.3 {7580} |
285 {29000} |
448 {45500} |
200 | 55.5 | 74 | 64 | M16 | M17 | 36 | 0.33 | 0.17 |
| RF26250 | 250 | ||||||||||||
| RF26300 | 300 | ||||||||||||
| RF26450 | 450 | ||||||||||||
| RF36250 | 68.0 {6930} |
97.4 {9930} |
457 {46500} |
614 {62500} |
250 | 66 | 91.5 | 78.5 | M20 | M20 | 42 | 0.55 | 0.26 |
| RF36300 | 300 | ||||||||||||
| RF36450 | 450 | ||||||||||||
| RF36600 | 600 | ||||||||||||
| RF52300 | 71.4 {7280} |
147 {15000} |
481 {49000} |
953 {97000} |
300 | 79 | 110 | 93.5 | M24 | M25 | 48 | 0.85 | 0.39 |
| RF52450 | 450 | ||||||||||||
| RF52600 | 600 | ||||||||||||
| RF60300 | 71.4 {7280} |
149 {15200} |
479 {49000} |
1010 {103000} |
300 | 72.5 | 104 | 86.5 | M27 | M30 | 55 | 1.18 | 0.53 |
| RF60350 | 350 | ||||||||||||
| RF60400 | 400 | ||||||||||||
| RF90350 | 113 {11500} |
233 {23700} |
754 {77000} |
1600 {163000} |
350 | 85.5 | 120.5 | 102 | M30 | M35 | 65 | 1.85 | 0.88 |
| RF90400 | 400 | ||||||||||||
| RF90500 | 500 | ||||||||||||
Note)
- 1. The operating temperature range is -20℃ to 150°C. Contact a Tsubaki representative for use outside this range.
- 2. L 4 and L 5 are longer pin lengths than L 2. Make sure there is no contact with equipment.
- 3. To tighten the short-type nut, use a hook spanner or socket wrench.
- 4. For attachment type, see the Tsubaki Large Size Conveyor Chains & Sprockets catalog.
- 5. Sizes (e.g. in inches) and specifications (e.g. stainless steel ) other than those in the table above may also be manufactured. Please consult us.
Price/delivery list
DT Series (Standard type )
| Size | Attachments | |||||||
|---|---|---|---|---|---|---|---|---|
| None | A2 | K2 | GA2 | |||||
| Standard Price | Delivery | Standard Price | Delivery | Standard Price | Delivery | Standard Price | Delivery | |
| RF10100 | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. |
| RF10125 | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. |
| RF10150 | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. |
| RF12200 | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. |
| RF12250 | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. |
| RF17200 | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. |
| RF17250 | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. |
| RF17300 | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. |
AT Series (Standard type )
| Size | Attachments | |||||||
|---|---|---|---|---|---|---|---|---|
| None | A2 | K2 | GA2 | |||||
| Standard Price | Delivery | Standard Price | Delivery | Standard Price | Delivery | Standard Price | Delivery | |
| RF10100 | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. |
| RF10125 | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. |
| RF10150 | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. |
| RF12200 | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. |
| RF12250 | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. |
| RF17200 | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. |
| RF17250 | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. |
| RF17300 | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. | Contact us for details. |
Click here for a list of attachment types
※Specifications, sizes, short types and configurations not listed in the table above will be quoted on a made-to-order basis.
