Mahindra 4550 · PTO WOOD CHIPPERS
The 4550 4WD’s 38 PTO hp clears WC88’s 35-hp minimum by 3.0, which makes the 8-inch class available for the first time on a Mahindra tractor here. The same tractor is too strong for several small chippers: 38 PTO hp exceeds WC46 and TFG55’s 30-hp ceiling, and 48 engine hp exceeds Farmry WCAP5’s 45.
By Acreage Equipment · Reviewed November 8, 2026 · Specification research, not a field test
PUT THIS GUIDE TO WORK
See published mismatches and the checks still needed.
BEST MATCHES FOR THE 4550
12 of 19 pto wood chippers we track pass the published power, hitch and speed screen. Each still has a detail to confirm with the seller.
PTO chipperWoodland Mills
8″ maximum branch diameter, inches · 35–100+ PTO hp
Confirm the actual hitch category, required bushings and complete mounting arrangement; multiple listed categories do not establish quick-hitch compatibility.
PTO chipperWoodland Mills
6″ max. chip diameter · 20–50 PTO hp
Confirm the actual hitch category, required bushings and complete mounting arrangement; multiple listed categories do not establish quick-hitch compatibility.
PTO chipperWoodMaxx
9″ maximum chip diameter, inches · 25 PTO hp minimum; maximum not stated
Confirm the actual hitch category, required bushings and complete mounting arrangement; multiple listed categories do not establish quick-hitch compatibility.
PTO chipperFarmer-Helper
6.5″ manual feed-opening short side, inches · 25–45 PTO hp in current index-linked manual; older capacity/range conflicts retained
Confirm the actual hitch category, required bushings and complete mounting arrangement; multiple listed categories do not establish quick-hitch compatibility.
PTO chipperWallenstein
5″ max. chip diameter · 22–55 engine hp · official U.S. page
Confirm the actual hitch category, required bushings and complete mounting arrangement; multiple listed categories do not establish quick-hitch compatibility.
PTO chipperFarmry
5″ max. chip diameter · 15–45 PTO hp
Confirm the actual hitch category, required bushings and complete mounting arrangement; multiple listed categories do not establish quick-hitch compatibility.
6 more possible options in the full comparison table.
THE DECISION IN NUMBERS
Tractor reference: Mahindra 4550 4WD, 38 PTO hp (live) and 48 engine hp at 2,300 rpm with no named standard; 3,527 lb at 24 in. in the web table; Category 1 and 2 adjustable hitch. Capacity conditions are manufacturer statements, not throughput tests.
Scroll the table sideways on smaller screens.
| Chipper | Published requirement | Result on the 4550 | Capacity note |
|---|---|---|---|
| Woodland Mills WC88 | 35 PTO hp minimum (35–100+) | 3.0 hp above minimum | Full 8-inch at full feed needs over 60 PTO hp |
| Woodland Mills WC68 | 20–50 PTO hp | Inside (+18.0) | Full 6-inch at full feed needs over 40 PTO hp: 2.0 short |
| WoodMaxx MX-9900 | 25 PTO hp minimum | 13.0 hp above minimum | Separate 50+ HP full-capacity statement |
| Farmer-Helper FH-BX62S | 25–45 PTO hp | Inside; 7.0 below maximum | Capacity statements conflict across documents |
| Wallenstein BX52S | 22–55 engine hp | 48 inside; 7.0 below maximum | No power-to-capacity condition published |
| Wallenstein BX72S | 50–85 engine hp | 2.0 below minimum: excluded | Not applicable |
| Farmry WCAP5 / WCAP5 Pro | 15–45 engine hp / 15–45 PTO hp (Pro manual p21; p22 gives 20–50 for Cat 1N) | WCAP5: 48 exceeds by 3.0, excluded. Pro: 38 inside either Pro range | Different bases on two similar machines |
| Woodland Mills WC46 / TFG55 | 15–30 PTO hp (TFG55 table 12–30) | Exceeds maximum by 8.0: excluded | Not applicable |
Woodland Mills lists WC88 at 35–100+ PTO hp and ties full 8-inch logs at full feed speed to over 60 PTO hp. The 4550’s 38 clears the minimum by 3.0 hp and sits 22 hp below the full-feed condition. WC88’s self-contained hydraulic feed lets the operator slow the feed, and its 900-lb product weight is well within the 3,527-lb lift rating. Ask Woodland Mills what diameter to expect at 38 PTO hp.
WC46 and TFG55 are rated to 30 PTO hp; the 4550 exceeds that by 8.0. Farmry’s WCAP5 manual labels its 15–45 range engine horsepower, and 48 exceeds it by 3.0. The WCAP5 Pro manual gives 15–45 PTO hp for Category 1 (and 20–50 PTO hp for Cat 1N on another page), and 38 is inside either. Two similar machines from one maker give opposite answers because their ranges use different bases. Read the basis, not just the number.
Wallenstein publishes engine-horsepower ranges. BX52S’s 22–55 includes the 4550’s 48, with 7 hp to spare. BX72S starts at 50, which 48 misses by 2.0. Mahindra labels its engine figure “(T4)” but does not name SAE J1995 or J1349, so a dealer-confirmed standard matters most for the BX72S decision.
The 4550’s hitch is listed as Category 1 and 2 adjustable. WC88 is Category 1, and BX52S’s current page lists a separate 1000-rpm shaft that is not needed at the tractor’s 540 rpm. Mahindra lists the PTO as “Live” with no overrunning note, so ask how it is engaged and whether the chipper’s driveline needs overrunning protection for a heavy flywheel.
Wallenstein’s current pages rate the 5-inch BX52RI (30–55 engine hp, Category I) and the 7-inch BX72RI (45–85 engine hp, Category I and II). Two hydraulic rollers pull material in at a set rate, and P3 PULSE reverses them when the rotor slows; they need 3–6 gpm from a rear remote or Wallenstein’s PTO-driven power pack. The Mahindra 4550’s 48 engine hp is inside the BX52RI’s range on both the page and the manual. It is inside the BX72RI page’s 45–85 but under the 50 that the manual’s table gives for the BX72R, so ask Wallenstein which floor applies to the serial on offer. Its published lift at 24 inches, 3,527 lb, carries the 1,300-lb BX72RI with 2,227 lb to spare. Wallenstein lists no price; ask a dealer.
THE SCREEN, WITH ITS LIMITS VISIBLE
No pairing below is manufacturer-confirmed. “Preliminary” still requires implement limits, load center, ballast, hitch geometry and shaft checks.
Initial specification screen only. Scroll the table on small screens. Read the product page for every remaining check.
| Attachment | U.S. 4WD · 8F/2R full constant mesh gear · dual clutch · open station ROPS38 PTO hp |
|---|---|
| Farmry WCAP5 →412 lb · Net weight WITH PTO shaft, manual Rev1.5 p20 | Published mismatch48 engine hp exceeds the published 45 hp range. |
| Farmry WCAP5 PRO →386 lb · Product weight, current manual Rev1.4 p13; whether PTO shaft is included in this weight is not stated | Needs specification reviewConfirm the actual hitch category, required bushings and complete mounting arrangement; multiple listed categories do not establish quick-hitch compatibility. |
| Woodland Mills WC46 →587 lb · Product weight, 2024 operator manual Rev C p9 | Published mismatch38 PTO hp exceeds the published 30 hp range. |
| Woodland Mills WC68 →747 lb · Product weight, 2024 operator manual Rev C p9 | Needs specification reviewConfirm the actual hitch category, required bushings and complete mounting arrangement; multiple listed categories do not establish quick-hitch compatibility. |
| Woodland Mills TFG55 PTO →346 lb · Product weight, Rev B manual p9 | Published mismatch38 PTO hp exceeds the published 30 hp range. |
| Woodland Mills WC88 →900 lb · Product weight: 900 lb in current linked 2022 Rev C manual, printed p9; shipping weight is 1,054 lb. The manual does not explicitly identify whether quoted product weight includes the PTO shaft or filled hydraulic oil. | Needs specification reviewConfirm the actual hitch category, required bushings and complete mounting arrangement; multiple listed categories do not establish quick-hitch compatibility. |
| WoodMaxx WM-8H →Operating weight unconfirmed · Operating weight is unverified in the current official product page and linked manual. The page lists 990 lb SHIPPING weight; do not use it as operating weight. Confirm weight with PTO shaft and a filled hydraulic tank. | Needs specification reviewConfirm the actual hitch category, required bushings and complete mounting arrangement; multiple listed categories do not establish quick-hitch compatibility. |
| WoodMaxx WM-8M →775 lb · Product page states 775 lb total weight on the three-point hitch; shaft/fluid inclusion is not explicit. Shipping sections conflict at 950 versus 990 lb. Confirm the delivered operating assembly and shipping revision. | Needs specification reviewConfirm the actual hitch category, required bushings and complete mounting arrangement; multiple listed categories do not establish quick-hitch compatibility. |
| WoodMaxx MX-8800 →Operating weight unconfirmed · Complete operating weight is unverified. Current Rev D manual (printed p45 / pdf p46, technical specifications) states approximately 772 lb DRY weight; page separately states 1,004 lb SHIPPING weight. Shaft inclusion in dry weight is not explicit. Do not substitute either figure for a confirmed shaft/oil-inclusive operating load. | Needs specification reviewConfirm the actual hitch category, required bushings and complete mounting arrangement; multiple listed categories do not establish quick-hitch compatibility. |
| WoodMaxx MX-9900 →Operating weight unconfirmed · Complete operating weight is unverified. Current Rev C manual (printed p42 / pdf p43, technical specifications) states approximately 816 lb DRY weight; page separately states 1,048 lb SHIPPING weight. Shaft inclusion in dry weight is not explicit. Do not substitute either figure for a confirmed shaft/oil-inclusive operating load. | Needs specification reviewConfirm the actual hitch category, required bushings and complete mounting arrangement; multiple listed categories do not establish quick-hitch compatibility. |
| Farmer-Helper FH-BX42 →Operating weight unconfirmed · Complete operating weight is unverified. Current index-linked manual p2 lists 430 lb net and 450 lb shipping. Current product/series pages instead list 423 lb net and 458 lb shipping. Net-weight shaft/assembly inclusions are unstated; none is substituted for a verified operating load. | Needs specification reviewConfirm the actual hitch category, required bushings and complete mounting arrangement; multiple listed categories do not establish quick-hitch compatibility. |
| Farmer-Helper FH-BX62S →Operating weight unconfirmed · Complete operating weight is unverified. Current index-linked manual p2: 830 lb net / 860 lb shipping. Current series page: 835 lb net / 915 lb gross. Product page calls 835 lb both total and gross; older product-linked manual p38 gives 797 lb net / 850 lb gross. Shaft/assembly inclusions are unstated, so no reference is used as operating weight. | Needs specification reviewConfirm the actual hitch category, required bushings and complete mounting arrangement; multiple listed categories do not establish quick-hitch compatibility. |
| Wallenstein BX36S →Operating weight unconfirmed · Official page Total Weight and Jan-2025 manual Weight: 395 lb. Neither states whether the supplied shaft and all operating equipment are included; complete operating and separate shipping weights remain unverified. | Published mismatch48 engine hp exceeds the published 30 hp range. |
| Wallenstein BX52S →Operating weight unconfirmed · Official page Total Weight and Jan-2025 manual Weight: 505 lb. Neither states whether the supplied shaft and all operating equipment are included; complete operating and separate shipping weights remain unverified. | Needs specification reviewConfirm the actual hitch category, required bushings and complete mounting arrangement; multiple listed categories do not establish quick-hitch compatibility. |
| Wallenstein BX72S →Operating weight unconfirmed · Current official page Total Weight and Jan-2025 manual Weight: 728 lb. Neither defines complete shaft-inclusive operating mass or a separate shipping weight. Confirm the assembled operating load; do not relabel 728 lb as dry or shipping weight. | Published mismatch48 engine hp is below the 50 hp minimum. |
| Wallenstein BX102S →1143 lb · Total Weight 1143 lb (519 kg) on the current page and in the Jan-2025 BX-S manual. Neither says whether the PTO shaft is included; confirm the assembled operating load. | Published mismatch48 engine hp is below the 80 hp minimum. |
| Wallenstein BX52RI →845 lb · Total weight 845 lb on the current page and operating weight 845 lb in the BXR manual §10.1. Neither says whether the PTO shaft is included. | Needs specification reviewConfirm the actual hitch category, required bushings and complete mounting arrangement; multiple listed categories do not establish quick-hitch compatibility. |
| Wallenstein BX72RI →1300 lb · Total weight 1,300 lb on the current page and operating weight 1,300 lb in the BXR manual §10.1. Neither says whether the PTO shaft is included. | Needs specification reviewConfirm the actual hitch category, required bushings and complete mounting arrangement; multiple listed categories do not establish quick-hitch compatibility. |
| Wallenstein BX102RI →1950 lb · Total weight 1,950 lb on the current page and operating weight 1,950 lb in the BXR manual §10.1. Neither says whether the PTO shaft is included. | Published mismatch48 engine hp is below the 75 hp minimum. |
On a tractor with about 38 PTO and 48 engine hp, should I buy the 5-inch BX52S or step up to the 8-inch WC88?
Read the guide →FIELD GUIDETake the complete setup, not just a horsepower number, to the manufacturer.
Read the guide →FOLLOW THE NUMBERS
Research record reviewed November 8, 2026. Confirm the current manual and the exact revision supplied with your machine.