Parts & service
DB 8350 Caliper Brake
Manufactured by Norman G Clark under licence since 1962.
On this page: Brake Dimensions Brake discs Spare parts Repair kits Air connections
DB 8350
Brake
| NGC part no. | Description | Nexen part no. |
|---|---|---|
| AT0001 | Model DB 8350 Caliper Brake | 835000 |
| AT0001A | 8350 Disc Caliper Brake – Suit 0.5″ Disc | |
| AT0001AL | 8350 Disc Caliper Brake – Loco 0.5″ Disc | |
| AT0001F | 8350 Disc Caliper Brake – Special | |
| AT0001H | 8350 Disc Caliper Brake – HiCo Assembly | |
| AT0001L | 8350 Disc Caliper Brake – LoCo Assembly | |
| AT0001S | 8350 Disc Caliper Brake – Assembly W/O T Bracket | |
| AT0001U | 8350 Disc Caliper Brake – Ultra Loco |
Available Disc
| 10″ disc | 490″ lbs / 56 Nm @ 80 PSI |
| 12″ disc | 605″ lbs / 69 Nm @ 80 PSI |
| 14″ disc | 710″ lbs / 81 Nm @ 80 PSI |
| 16″ disc | 860″ lbs / 98 Nm @ 80 PSI |
DB 8350
Dimensions
Dimensions show in inches, the drawing’s primary unit – use the mm / in buttons to switch. Side shows the heights, bolt centre, foot and overall width; Front shows the disc radius, piston centre and base.
Norman G Clark endeavours to keep specifications up to date. Please confirm specifications with Norman G Clark before purchasing. The disc is shown for reference only.
Disc
| Accepted disc thickness | 5.8 mm / 0.230″ |
DB 8350
Brake Discs
| NGC part no. | Description | Max speed |
|---|---|---|
| AT1016 | 10″ Disc – Pilot Bore (Mild Steel) | 4500 RPM |
| AT1016A | 10″ Disc – Bored to suit 2517 Hub | 4500 RPM |
| AT1017 | 10″ Disc – Bored to suit F-450 (M.S.) | 4500 RPM |
| AT1018 | 12″ Disc – Pilot Bore (Mild Steel) | 3800 RPM |
| AT1018A | 12″ Disc – Bored to suit 2517 Hub | 3800 RPM |
| AT1019 | 12″ Disc – Bored to suit L-600 (M.S.) | 3800 RPM |
| AT1020 | 14″ Disc – Pilot Bore (Mild Steel) | 3200 RPM |
| AT1020A | 14″ Disc – Bored to suit 2517 Hub | 3200 RPM |
| AT1021 | 14″ Disc – Bored to suit M-800 (M.S.) | 3200 RPM |
| AT1022 | 16″ Disc – Pilot Bore (Mild Steel) | 2800 RPM |
| AT1022A | 16″ Disc – Bored to suit 2517 Hub | 2800 RPM |
| AT1023 | 16″ Disc – Bored to suit H-1000 (M.S) | 2800 RPM |
*Note: Steel Disc Thickness – 5.8mm / 0.230″
DB 8350
Spare Parts
| Item | NGC part no. | Description | Qty | In repair kit |
|---|---|---|---|---|
| 1 | AT1001 | Shoe Assembly | 2 | Yes |
| 2 | AT1002 | Air Chamber | 2 | |
| 3 | AT1003 | Piston | 2 | |
| 4 | AT1004 | Guide Pin | 1 | Yes |
| 5 | AT1005 | O-Ring Seal Set | 1 | Yes |
| 6 | AT1036 | Screw | 4 | Yes |
| 7 | AT1007 | Lock Washer | 4 | |
| 8 | AT1008 | Bolt-Hex HD | 2 | |
| 9 | AT1009 | Spring Washer | 2 | |
| 10 | AT1010 | Hex Nut | 2 | |
| 11 | AT1011 | Return Spring | 1 | Yes |
| 12 | AT1012 | “T” Support | 1 | |
| 13 | AT1013 | Air Chamber Spacer | 2 | |
| 14 | AT1014 | Washer – Flat | 4 |
DB 8350
Repair Kits
| NGC part no. | Description |
|---|---|
| AT1025 | DB 8350 Repair Kit |
DB 8350
Air Connections
All Nexen pneumatically actuated devices require clean and dry air, which meet or exceeds ISO 8573.1:2001 Class 4.4.3 quality.
Note
For quick response, Nexen recommends a quick exhaust valve and short air lines between the Control Valves and the product. Align the air inlet ports to a down position to allow condensation to drain out of the air chambers of the product.
Caution
Low air pressure will cause slippage and overheating. Excessive air pressure will cause abrupt starts and stops, reducing product life.
| Air Pressure (Gage) Limits |
|---|
| 6.9 Bar (100 PSI) Absolute Max. |
| 0 Bar (0 PSI) Absolute Min. |
The following is a common air supply scheme used with this product. This is an example and not an all-inclusive list. All air circuits to be used with this product must be designed following ISO-4414 guidelines.
Optional DB Air Hose Assembly, #835400
Assembly Instructions:
- Install Male Connector into each 1/8-NPT Air Inlet Port.
- Insert one 4 Inch Tube into each Male Connector.
- Insert other ends of Tubing into Tee Fitting.
- Connect a clean and dry air supply to the 1/8-NPT connection of the Tee Fitting.
