Parts & service
Air Champ Clutch Model F-450
Manufactured by Norman G Clark under licence since 1962.
On this page: Clutch Dimensions Bushes Spare parts Repair kits Air connections Troubleshooting
F-450
Clutch
| NGC part no. | Description | Nexen part no. |
|---|---|---|
| AB4501 | F-450 Clutch – 7/8″ Bore | 802850 |
| AB4502 | F-450 Clutch – 19mm Bore | |
| AB4503 | F-450 Clutch – 0.875″ Bore Loco |
Specifications
| Diameter | 4 ½” |
| Torque Max | 140″ lbs / 16 Nm |
| Air Pressure | Recommended Maximum 80 PSI |
| Minimum Shaft Insertion | 2.0″ (50.80 mm) |
| Motors | Up to 3.70 KW (5 HP) |
| Max speed | Up to 3,600 RPM |
F-450
Dimensions
Dimensions show in the chosen part number’s primary unit – use the mm / in buttons to switch. Side shows the lengths, diameters and running clearance; Front shows the tapped holes, bore [A] and keyway [B] [C] for the part number chosen under the drawing.
Norman G Clark endeavours to keep specifications up to date. Please confirm specifications with Norman G Clark before purchasing. The fins and housing are not dimensioned.
Bore and keyway
| Clutch part no. | Hub part no. | Primary UoM | Bore diameter [A] | Keyway height [B] | Keyway width [C] | Friction facing type |
|---|---|---|---|---|---|---|
| AB4501 | AB1101 | Imperial [inches] | 0.875″+0.001 (22.23 mm) | 0.964″+0.010″ (24.49 mm) | 0.188″+0.002″ (4.78 mm) | Standard |
| AB4502 | AB1130 | Metric [mm] | 19mm+0.03mm | 21.8mm+0.10mm | 6.00mm+0.05mm | Standard |
| AB4503 | AB1101 | Imperial [inches] | 0.875″+0.001 (22.23 mm) | 0.964″+0.010″ (24.49 mm) | 0.188″+0.002″ (4.78 mm) | LoCo |
| AB4504 | AB1130 | Metric [mm] | 19mm+0.03mm | 21.8mm+0.10mm | 6.00mm+0.05mm | HiCo |
Weight and carton
| Weight | 5.0 kg |
| Carton | 14.5cm x 14.5cm x 14.5cm |
F-450
Bush & Key Set
| NGC part no. | Description |
|---|---|
| AB1133 | Imperial Bush & Key Set – 1/2″ ID x 7/8″ OD |
| AB1134 | Imperial Bush & Key Set – 3/4″ ID x 7/8″ OD |
| AB1135 | Imperial Bush & Key Set – 5/8″ ID x 7/8″ OD |
| AB1219 | Metric Bush & Key Set – 12mm ID x 19mm OD |
| AB1419 | Metric Bush & Key Set – 14mm ID x 19mm OD |
| AB1619 | Metric Bush & Key Set – 16mm ID x 19mm OD |
F-450
Spare Parts
| Item | NGC part no. | Description | Qty | In repair kit |
|---|---|---|---|---|
| 1 | AB1102 | Drive Disc | 1 | |
| 2 | AB1108 | Ball Bearing | 1 | Yes |
| 3 | AB1128 | Retaining Ring (Internal) | 1 | |
| 4 | AB1103 | Friction Facing | 1 | Yes |
| 5 | AC1255 | Brass Screw (Countersunk) | 6 | Yes |
| 6 | AB1101 | Hub 7/8″ Bore | 1 | |
| 6 | AB1130 | Hub 19mm Bore | 1 | |
| 7 | AB1109 | Compression Spring | 1 | Yes |
| 8 | AB1140 | Key (only supplied in F-450 Model) | 1 | Yes |
| 9 | AB8240 | Friction Disc | 1 | |
| 10 | AC1208 | Ball Bearing | 2 | Yes |
| 11 | AB8232 | Cylinder | 1 | |
| 12 | AB1141 | Slotted Spring/Torque Pin | 1 | Yes |
| 13 | AB8236 | Pistion | 1 | |
| 14 & 15 | AB4510 | O-Ring Seal Set | 1 | Yes |
| 16 | AB8247 | Adjustment Nut | 1 | |
| 17 | AL1104 | Grub Screw | 1 | |
| 18 | AC1218 | Grub Screw | 1 | |
| 18 | AB1116 | Grub Screw | 1 | |
| AB1118 | Lead Ball | 2 | Yes |
F-450
Air Connections
An Air Line (Item 20) is furnished and air controls with 1/8 NPT ports are recommended. Where long air lines are required, a Quick Exhaust Valve (Product No. 945100) is recommended to ensure rapid disengagement.
Note: Because of the necessary movement of the air chamber and Air Line upon engagement, flexible tubing or air lines must be used on the Air Champ II.
Due to bearings seal drag, the outer portion or the Air Champ II will rotate when it is engaged. Rest the air line against a support that is parallel to the centerline of the Air Champ II to stop this rotation.
Note: Pressure should be regulated to the minimum required for sufficient torque to maximize bearing life.
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.
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.
F-450
Troubleshooting Guide
| Symptom | Possible cause | Solution |
|---|---|---|
| Failure to engage | Air not getting to the Air Champ II due to a control valve malfunction or low air pressure | Check control valve and air pressure setting |
| Defective O-ring Seals, causing air leaks | Replace O-ring Seals | |
| Lack of lubrication on the Hub spline or in the air chamber | Lubricate the Hub spline with a thin film of Never Seez® or check air line lubricator settings | |
| Rigid pipe or tubing for air line connections | Use flexible pipe or tubing for all air line connections | |
| Failure to disengage | Friction lock due to a lack of lubrication on the Hub spline or in the air chamber | Lubricate the Hub spline with a thin film of Never Seez® or check air line lubricatorsettings |
| Broken Compression Springs | Install new Compression Spring | |
| Unexhausted air due to a control valve malfunction | Check or replace control valve | |
| Excessive drag on the air line | Defective Bearings | Replace Bearings |
| Air line not properly supported | Rest the air line against a support that is parallel to the centerline of the Air Champ II |