Swivel design meets high requirements to its reliability:
- the main support is a thrust bearing with taper rollers, which prolongs the swivel life up to the overhaul;
- the gooseneck made of high-alloy steel, is high-resistant to the attack of the flush fluid supplied under high pressures;
- design of the swivel body lower part ensures secure sealing of the oil bath;
- in the quick-release seal the pipe working surface is hardened with plasma coating in the cups contact area;
- cups lifetime is prolonged due to their alternate engagement into rotation, or their simultaneous engagement with rotation speed 2 times less than the swivel stem rotation speed.
Specifications
| Parameters/Model | UV 160МА | UV 175МА | UV 250МА | UV 270МА | UV 320МА | UV 450МА | UV 500МА |
| Load capacity, t (lbs.) | 160 (352740) | 175 (385809) | 250 (551156) | 270 (595248) | 320 (705479) | 450 (992080) | 500 (1102311) |
| Maximum working pressure, MPa (PSI) | 35 (5076) | 35 (5076) | 35 (5076) | 35 (5076) | 35 (5076) | 35 (5076) | 35 (5076) |
| Fluid passage bore, in | 3 | 3 | 3 | 3 | 3 | 3 | 3 |
| Sub-to-kelly thread (left- hand) |
3152L | 3152L | 3152L | 3152L | 3152L | 3152L | 3152L |
| Stem connecting thread (left-hand) | 3152L | 3152L | 3152L | 3152L | 3177L | 3177L | 3177L |
| Height (without sub), in | 87.7 | 87.7 | 94.9 | 94.9 | 103.4 | 117.7 | 127.1 |
| Width at bail pins, in | 37.4 | 37.4 | 42.9 | 42.9 | 47.7 | 54.1 | 54.3 |
| Weight, lbs | 3571 | 3505 | 4850 | 4850 | 6569 | 9039 | 12500 |
