P30/P31 Hydraulic Gear Pump&Motor
P30/P31 Hydraulic Gear Pump&Motor for Skid Steer Loader, Crawler Excavator, Tractor
HYLEMAN corporation specializes in Hydraulic Gear Pump / Piston Pump / Vane Pump / Piston Motor and Slewing Gear Boxes manufacturing, sales and development. Our products are widely used at Marine, Mining Machinery, Construction Machinery, Agricultural Machinery, Forestry Machinery, Steel Industry and so on. We pursuit to be the global leading hydraulic motors and pumps manufacturer and service provider. Customer first is one of our key value. We appreciate cooperating with friends from all over the world.
Products Description
P30/31 Series Bearing - SAE A 2 Bolt Cast Iron with OB Bearing Gear Pump CW
| Stock No. | Gear Width | Code | Displacement cc/rev | Displacement cu.in/rev | Pressure Bar | Weight KG |
| P31A494-05 | 1/2″ | 05 | 16 | 0.985 | 200 | 13 |
| P31A494-07 | 3/4″ | 07 | 24 | 1.47 | 200 | 14 |
| P31A494-10 | 1″ | 10 | 32 | 1.97 | 200 | 14.5 |
| P31A494-12 | 1-1/4″ | 12 | 40 | 2.46 | 200 | 15 |
| P31A494-15 | 1-1/2″ | 15 | 48 | 2.95 | 200 | 15.5 |
| P31A494-17 | 1-3/4″ | 17 | 56 | 3.44 | 180 | 16 |
| P31A494-20 | 2″ | 20 | 64 | 3.94 | 180 | 16.5 |
| P31A494-22 | 2-1/4″ | 22 | 81 | 4.89 | 180 | 17.5 |
P30/31 Series Bearing - SAE B 2 Bolt Cast Iron with OB Bearing Gear Pump CW
| tock No. | Gear Width | Code | Displacement cc/rev | Displacement cu.in/rev | Pressure Bar | Weight KG |
| P31A497-05 | 1/2″ | 05 | 16 | 0.985 | 200 | 13 |
| P31A497-07 | 3/4″ | 07 | 24 | 1.47 | 200 | 14 |
| P31A497-10 | 1″ | 10 | 32 | 1.97 | 200 | 14.5 |
| P31A497-12 | 1-1/4″ | 12 | 40 | 2.46 | 200 | 15 |
| P31A497-15 | 1-1/2″ | 15 | 48 | 2.95 | 200 | 15.5 |
| P31A497-17 | 1-3/4″ | 17 | 56 | 3.44 | 180 | 16 |
| P31A497-20 | 2″ | 20 | 64 | 3.94 | 180 | 16.5 |
| P31A497-22 | 2-1/4″ | 22 | 81 | 4.89 | 180 | 17.5 |
| Available Models: G101/102 C101/102 P30/31 P50/51 P75/76 P315 P330/350 P365 |
Available Models:
G101/102 C101/102 P30/31 P50/51 P75/76 P315 P330/350 P365
Detailed Photos


Ordering Codes
Technical Data:

Ordering Codes:

| DRW.NO. | DESCRIPTION | DOYLE NO. | GENERAL NO. |
| 1 | 8HAFT BEARING SN PRING | 391-2686-063 | |
| 2a | INPUT SHAFT BEARING | 391-0381-040 | |
| 2b | BEARING SPACER(IN PLACE OF SHAFT BEARING) | 391-0381-906 | 391-3383-068 |
| 3 | MOTOR SEAL RETAINER USED WITH SHAFT BEARING OR SPACER | 391-3381-040 | |
| 4a | PUMPLIP SEALFOR CONTINENTALSHAFT ONLY | 391-2883-107 | |
| 4b | PUMPLIP SEAL FOR PIGGY BACK 76/31 SHAFT END COVER | 391-2883-103 | |
| 4c | MOTORLIPSEAL | 391-2883-119 | |
| 4d | MOTORLIP SEALFOR CONTINENTAL SHAFT ONLY | 391-2883-126 | |
| 5a | 31 PAD PILOT PUMPS.E.C.TYFE 00 | AV-1685-3 | 312-5017-201 |
| 5b | 316BOLT ROUND WITH2.625or66,67 mm PILOT PUMPS.E.C.TYPE05 | FB-1685-3 | 312-5047-201 |
| 5c | 314BOLT BPILOT PUMPS.E.C TYPE42(4"or 101.6mm piot) | EB-1685-3 | 312-5037-201 |
| 5d | 314BOLT CPILOT PUMPS.EC TYPE78(5°or 127 mm piot) | PB-1685-3 | 312-5037-202 |
| 5e | 312BOLTAPILOT PUMPS.E.C TYPE 94(314or 82,55mm plok) | WB-1685-3 | 312-5027-204 |
| 51 | 312BOLTB PILOT PUMPSE.C TYPE 97(4"or 101,6 mm piot) | CB-1685-3 | 312-5027-201 |
| 5g | 312BOLT B(TYPE 2)PILOT PUMPS.E.C.TYPE96(4°or 101,6 mm piot) | DB-1685-3 | 312-5027-205 |
| 5h | 3151 SHAFT END COVER FOR PIGGYBACKUNITS TYPE 91 | DC-1685-15 | 312-5027-208 |
| 51 | 76/31 SHAFT END COVER FORPIGGYBACK UNITS TYPE 92 | ZB-1685-15 | 312-5027-209 |
| 5J | 312/4 BOLT BPILOT PUMPS.EC.TYPE 46(4or 101.6 mm piot) | GEB-1685-3 | 312-5053-202 |
| 5k | 31 PAD PILOT MOTORS.E.C.TYPE 00 | AC-1685-3-M | 312-5017-401 |
| 5L | 316 BOLT ROUND WITH2.62568,87 mm PILOT MOTOR S.E.C.TYPE 05 | FB-1685-3-M | 312-5047-401 |
| 5m | 314BOLTBPILOT MOTOR S.EC.TYPE 42(4°or 101,6mm piot) | EB-1685-3-M | 312-5037-401 |
| 5n | 314BOLT CPILOT MOTOR S.EC.TYPE 78(5°α 127 mm plot) | PB-1685-3-M | 312-5037-402 |
| 50 | 312BOLTAPILOT MOTOR S.EC.TYPE 94(31482,55mm plot) | WB-1685-3-M | 312-5027-404 |
| 5p | 312BOLTBPILOT MOTOR SEC.TYPE97(4°or 101,6mm piot) | GB-1685-3-M | 312-5027-401 |
| 5q | 312/4BOLTBPILOTMOTOR S.E.C.TYPE46(4or 101,6mmplot) | GEB-1685-3-M | 312-5053-402 |
| FOR MORE INFORMATION OR SPECIAL ORDER,PLEASE CONTACT US | |||
| 6a | CHECKVALVE MOTOR | HPN-084 | 391-3681-001 |
| 6b | PRESSURE PLUG PUMP | HPN-091 | 391-2286-004 |
| 7 | RING SEAL | HPN-126 | 391-2585-006 |
| 8 | ROLLER BEARING(01.6870.D) | Y-1032 | 391-0381-068 |
| 9a | PUMP THRUST PLATE | HPN-248 | 391-2185-031 |
| 9b | MOTOR THRUST PLATE | AA-1058 | 391-2185-013 |
| 10 | POCKET SEAL | 391-2882-086 | |
| 11 a | SHAFT&GEAR TYPE 30(0.8750×14x3/8°x1"key) | HPN-258 | 312-29XX-730 |
| 11b | SHAFT&GEAR TYPE 25(0.875°0-13-Tooth spine) | HPN-108 | 312-29XX-230 |
| 11e | SHAFT&GEAR TYPE43(1.00°Q×14°×14°x11/4"key) | HPN-259 | 312-29XX-740 |
| 11d | SHAFT&GEAR TYPE65TYPE2(0.875°-13-Tooch spine) | HPN-256 | 312-29XX-430 |
| 11e | SHAFT&GEAR TYPE65TYPE98(1"0-15-Tooth spine) | HPN-435 | 312-29XX-240 |
| 12 | PUMP&MOTOR HOUSING GASKET | 391-2884-050 | |
| 13 | PUMP&MOTOR GEAR HOUSING | RA-1688-XX | 312-82XX-100 |
| 14a | 31 MOTOR BEARING CARRIER BLANK | VA-1687 | 312-7740-100 |
| 14b | 31 PUMP BEARING CARRIER WTH COMMON PASSAGE | VA-1687-11 | 312-7723-100 |
| 15 | CONNECTING SHAFT | 312-1133-001 | |
| 16 | GEAR SET ONLY | HPN-109-XX | 312-28XX-000 |
| 17 | GEARHOUSING DOWELPIN | 391-2082-032 | |
| 18a | 31 PUMP&MOTOR PORT END COVER | XA-1603 | 312-3120-100 |
| 18b | 31 PUMP&MOTOR PORT END COVERLARGER PORTING | ZA-1603-RP | 312-3420-100 |
| 18c | 31/31 PIGGY BACKPORTEND COVER | DC-1685-24 | 312-5027-212 |
| 19 | FLAT WASHER | 391-3784-028 | |
| 20 | BOLTS/STUDS(5/8°UNC) | ||
| 21 | HEXNUT(5/8°UNC) | 391-1451-076 | |
| 22a | CONTINENTAL SHAFTTYPE30(0.875°0×14×3/8×1"key) | 312-1500-300 | |
| 22b | CONTINENTAL SHAFT TYPE 7(1250°-14-tooth splino,Continental only) | 312-1135-133 | |
| 22c | CONTINENTAL SHAFT TYPE 25(0.875°0-13-Toth spine) | 312-1135-138 | |
| 22d | CONTINENTAL SHAFT TYPE43(1.000x1/4*x3/8°×1114key) | 312-1500-400 | |
| 22e | CONTNENTAL SHAFT TYPE 12(0.750°×3/16×3/1618/16"key) | 312-1135-152 | |
| 22] | CONTINENTAL SHAFT TYPE95(0.625°×9-tooth spine) | 312-1000-200 | |
| 23 | CONTINENTAL SHAFT BRG.RETAJNER | 312-0100-002 | |
| 24 | CONTINENTAL SHAFT BRG.RETAJNER SNAP RING | 391-2685-011 | |
| Not Shown | PUMP&PIGGY BACK31/31 S.E.C.LIP SEAL | 391-2883-058 | |
| Not Shown | SEALRETAINER FOR 51/5183151 PIGGY BACK PUMP S.EC. | 391-2584-083 | |
| Not Shown | SEALRETAINERORING FOR PIGGY BACK PUMPS.E.C. | 391-2881-124 | |
| Not Shown | SEAL RETAINERORING FOR PIGGY BACK PUMPS.EC. | 391-2881-120 | |
| Not Shown | SEAL RETAINER FOR76/51&76/31 PIGGY BACK PUMPS.E.C. | HPN-368 | 391-2585-013 |
| Not Shown | CASE DRAIN PLUG | 391-2282-056 | |
| Not Shown | SHAFT KEYFORTYPE 12 SHAFT | X10-60 | 391-1781-075 |
| Not Shown | SHAFT KEYFORTYPE 43&87 SHAFT | 391-1781-021 | |
| Not Shown | SHAFT KEYFORTYPE 30&68 SHAFT | X10-17 | 391-1781-025 |
| Not Shown | SHAFT KEY FORTYPE Spl.SHAFT | 391-1781-020 | |
| Not Shown | 30/30 PIGGY BACK CONNECTING SHAFT | HPN-359 | 312-1133-002 |
| Not Shown | 60/30 PIGGY BACK CONNECTING SHAFT | HPN-3680 | 312-1133-003 |
| Not Shown | 75/30 PIGGYBACK CONNECTING SHAFT | HPN-361 | 316-1133-003 |
| NOTE TheXXshown in the pert number is in place of the slze the true value must be placod nto the part numberwhen ordening parts. | |||
| (og.) Ger set no.312-29XX-740 changes to 312-2915-740fox 1.5 gear size | |||
| Housing no.312-82XX-100 changes to 312-8215-100 for a 1.5 hcusing size | |||
| No porting sizes heve been indicaled all porting must be specfied when ordering perts. | |||
Company Profile

Ningbo Hyleman Hydraulics Co., Ltd is a scientific and innovative company integrating R & D, production, sales and service of high-quality hydraulic pumps, motors, valves and other hydraulic products.
Hyleman mainly provides Rexroth A4VSO, A10VSO, A4VG, A7VO, A11VO and A2FO series high-pressure piston pumps, Rexroth PGH3, PGH4 and PGH5 series high-pressure gear pumps, A4VM, A6VM, A2FM and A4FM series piston motors; BM3, BM4,BM5, BM6 and other orbit motors. Through the honing and innovation of Hyleman people, Hyleman series products can not only perfectly replace the original products, but also realize the seamless exchange and connection of all the parts. Moreover, it has lower noise, higher volume efficiency and longer service life, so as to completely surpass the quality of the original factory, and withstand the severe test of the market, has been exported to more than 70 countries and regions around the world.
Hyleman series products are widely used in engineering machinery, plastic machinery, metallurgical machinery, environmental sanitation machinery, mining machinery, marine machinery, packaging machinery, port machinery and various hydraulic equipment, which are highly praised by clients.
Hyleman has the world advanced CNC processing equipment, vertical and horizontal machining centers, high-precision double-sided grinding, groove grinding, curve grinding and full-automatic machining centers. With 12 independent testing laboratories, the products have been comprehensively inspected before shipment to ensure that Hyleman series products achieve high precision, high quality and zero defects.
"Optimizing the performance of hydraulic products, improving the quality of hydraulic products and leading the comprehensive upgrading of hydraulic product consumption" is not only the responsibility and mission of Hyleman, but also the Chinese dream of Hyleman. Hyleman are willing to work with people of insight to make unremitting efforts to realize this dream.
Warmly welcome all friends to visit the beautiful port city - Ningbo to discuss cooperation and seek common development with Hyleman!
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our Advantages
Why Choose HYLEMAN?
1. Top Quality
Depend on 15 years experience at hydraulic pumps design, research, development and manufacturing, we have a top quality compared with domestic and overseas manufacturers, all of our products are with 1 year warranty time.
2. Strict Quality Control System
We have the most strict quality control system, all of our products are 100% tested before shipment and each of them has one tracking code in order to make sure they are with good quality to our customers.
3. Advanced machinery equipment
All the machines we have are new CNC machines we imported from Germany and Japan in order to reach more higher demand at the products accuracy.
4. Strong Technical team
Our technical team all have more than 20 years experience at pumps design and engineering, our chief engineer has more than 40 years experience at pumps design. We have one 15 persons research team, responsible for pumps improvement research and new products development.
5. Competitive Price
Because of good management, our price is more competitive than the original products, more reasonable than most of the domestic suppliers.
6. Fast Delivery time
We can ship small orders within one week, for big orders such as within 500 PCS pumps or cartridge kits usually we can make shipment within one month.
7. Warranty Period
All of our products are within 1 year warranty time after the shipment from our factory.
8. Considerate Service
We can provide technical support at any time if our customers meet any issue during the using, we will provide solutions at the soonest time.
9. Long development strategy
We would like to establish a long time strategy cooperation relationship with our customers, to promote HYLEMAN brand together, support and train the potential customer to be our agent at each country and region all over the world.
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