Power take-off with clutch plate 3131 Series

high-torquefor heavy-duty applicationsfor trucks

Product overview
The 3131 series is Bezares' heavy-duty power take-off (PTO) designed for demanding truck and equipment pump applications. It delivers intermittent torque up to 500 lb·ft and example power up to 97 HP @ 1000 RPM. The unit uses a single pressure hose and internal lubrication to simplify installation. A range of gear ratios and output configurations is available, including a rear pump option (model 3131RP).

Key features

• Durable housing engineered for high-torque duty cycles.
• Rotatable solenoid cover on the PTO housing to improve clearance in tight installations.
• Internal lubrication reduces assembly time, extends bearing life and lowers operating temperature.
• All hoses, mounting hardware and wiring harness included for installation.
• 3131RP version configured for rear pump output.
• Clutch pack material specified for smooth engagement and long service life.

Competitive with
Muncie CS41 and Chelsea 870; Muncie CS10 (improved profile) and Chelsea 859.

Torque ratings
Up to 500 lb·ft (intermittent ratings as specified by ratio).

Typical applications
Large-body pump applications and heavy-duty vehicle-mounted pumps.

Engine to PTO ratio (data)
Engine to PTO ratio table (columns separated by |):
INTERNAL RATIO | INTERMITTENT SERVICE (Torque Lb. FT | Power HP At 500 r.p.m. | Power HP At 1000 r.p.m.) | CONTINUOUS SERVICE (Torque Lb. FT | Power HP At 500 r.p.m. | Power HP At 1000 r.p.m.)
50% (B) | 500 | 48 | 97 | 400 | 39 | 78
58% (C) | 500 | 48 | 97 | 400 | 39 | 78
68% (E) | 450 | 44 | 88 | 360 | 35 | 70
78% (G) | 420 | 40 | 80 | 340 | 33 | 65
84% (J) | 400 | 38 | 76 | 320 | 30 | 60
97% (M) | 380 | 36 | 72 | 300 | 28 | 56
119% (O) | 350 | 33 | 66 | 280 | 26 | 52

Documentation referenced
Datasheet, product manual and parts list are available for the 3131 series (refer to product documentation).

Technical specifications

• Model / Series: 3131 Series (includes 3131RP rear pump option)
• Maximum torque (intermittent): up to 500 lb·ft
• Maximum power example: 97 HP @ 1000 RPM (intermittent, example ratio)
• Pressure connection: single pressure hose
• Lubrication: internal lubrication
• Mounting position: Right, Left
• Weight: 75.5 lb
• Notes: A - Backlash check plug; B - Rotation; C - Solenoid 12V DC (24V DC optional); D - Pressure switch; E - Shifting hose included
• Outputs / options: wide range of gear ratios and output options; rear pump output option (3131RP)
• Included accessories: hoses, hardware, wiring
• Typical gearbox compatibility / options: 3000-MH, 4000-MH, 3000-RDS, 4000-RDS, 3000-TRV, 3200-TRV, 3500-EVS, 4000-EVS, 4000-TRV, 4500-EVS, 4500-RDS, 4700-EVS, 4700-OFS, 4700-RDS, 4800-EVS, HD-4070P, MD-3066P, 3000-EVS, 3500-RDS
• SKU: 3131series1